Europe

2016
Barrios, D., Russell, S. & Andrews, M., 2016. Bringing Home the Gold? A Review of the Economic Impact of Hosting Mega-Events.Abstract

There is perhaps no larger sports policy decision than the decision to host or bid to host a mega-event like the FIFA World Cup or the Summer Olympics. Hosts and bidders usually justify their decisions by touting their potential impact. Many organizers and promoters either fund or widely disseminate ex-ante studies that tend to highlight the positive effects of the event. For instance, the consultancy firm Ernst & Young produced a 2010 report prior to the 2014 World Cup in Brazil that painted an optimistic picture of the event’s potential legacy. It estimated that an additional R$ 142.39 billion (4.91% of 2010 GDP) would flow through the Brazilian economy over the 2010-2014 period, generating 3.63 million jobs per year, R$ 63.48 billion (2.17% of 2010 GDP) of income for the population and additional tax collection of R$ 18.13 billion (0.62% of 2010 GDP) for the local, state and federal governments. Ernst & Young estimated that during the same period 2.98 million additional visitors would travel to Brazil, increasing the international tourist inflow up to 79%.

Such results, if true, would clearly attractive for governments considering a bid, but these expected impacts don’t always materialize. Moreover, hosting mega-events requires significant investments - and the cost of these investments is rising. Zimbalist notes emerging economies like China, Brazil, and South Africa have increasingly perceived "mega-events as a sort of coming-out party signaling that [they are] now a modernized economy, ready to make [their] presence felt in world trade and politics" (Zimbalist 2015). Their intentions may be noble, but the intention of using mega-events as a "coming-out party" means developing countries hoping to host them need to make massive investments. They are confronted by significant obstacles in that they lack sufficient stadiums, accommodations, transportation systems, and other sports-related infrastructure. As a result, each of the mega-events hosted by emerging economies has been exorbitantly expensive. The 2014 World Cup cost Brazil between USD 15 billion and USD 20 billion, while Beijing reportedly spent USD 40 billion prior to the 2008 Summer Olympic (Zimbalist 2015). Additionally, as the debt-ridden 1976 Summer Olympics in Montreal demonstrates, expensive mega-events are not limited to emerging economies alone. Flyvbjerg and Stewart have even shown that every Olympics since 1960 has gone over budget (Flyvbjerg and Stewart 2012).

Such incredible figures, in terms of both costs and benefits, beget the question: are mega-events worth it? Which type of reports should governments focus their attention on? What economic consequences should a government reasonably expect? With such high stakes, policymakers need to choose wisely. We attempt to answer these questions and aid the decisions of policymakers by providing a concise review of the rich academic literature on mega-events. For the purposes of this paper, we mainly focus on the Summer Olympic Games and the FIFA World Cup as mega-events. However, we also leverage information regarding events like the Winter Olympic Games, the UEFA football championships, and the Commonwealth Games. These events are organized on a smaller scale than the previous two, but they might provide some insights on how to best understand mega-events. We focus on claims surrounding the direct or indirect mechanisms that facilitate the impact that ex-ante studies predict. We provide a review of these claims and their validity according to the existing literature.

Section 1 focuses on the argument that mega-events lead to increased economic activity in the host economy. Specifically, we evaluate whether or not mega-events leads to access to previously inaccessible funds and increased investments. These investments could theoretically come from supranational organizations, private stakeholders, or public stakeholders. We also consider whether or not these new expenditures and investments have the multiplicative effect that many ex-ante studies assume they have. We finally investigate if the economic activity surrounding mega-events leads to increased revenues and tax collection for host governments. Overall, the existing academic literature suggests that any increased economic activity resulting from the event is routinely dwarfed by additional public budgetary commitments. Moreover, the arguments regarding multiplicative effects and increased revenues also tend to be exaggerated.

Section 2 shifts the focus to the potential impact of mega-events on a specific industry: tourism. We explore the effect of mega-events on the number of tourists visiting the host region and their spending habits. We explore this channel both for analyses specific to a single mega-event and for cross-country evaluations incorporating many events. Next, we consider the impact of a mega-event on a region’s brand and image in the international community with the idea of testing if hosting the competition will impact future tourism. Finally, we consider if mega-events lead to increases in the capacity of a city or country to welcome future tourists as a result of improved airport infrastructure, accommodations, and/or transportation systems. As was true in Section 1, the academic literature suggests that the claims of many ex-ante studies are misleading. Our review finds that there is some evidence for increases in tourist arrivals to certain events, but those increases are far smaller than what is generally predicted beforehand. These effects are also usually dependent on factors, such as the timing of the competition, that are specific to the host region and the event itself.

Section 3 briefly discusses other potential qualitative and social impacts of mega-events such as international business relations, crime reduction, and the "feel-good effect." In the penultimate section, Section 4, we discuss how these conclusions should impact the decision-making of policymakers. Finally, in a short conclusion, we summarize the findings of our review.

cid_wp320_megaevents.pdf
Russell, S., Barrios, D. & Andrews, M., 2016. Getting the Ball Rolling: Basis for Assessing the Sports Economy.Abstract

Data on the sports economy is often difficult to interpret, far from transparent, or simply unavailable. Data fraught with weaknesses causes observers of the sports economy to account for the sector differently, rendering their analyses difficult to compare or causing them to simply disagree. Such disagreement means that claims regarding the economic spillovers of the industry can be easily manipulated or exaggerated. Thoroughly accounting for the industry is therefore an important initial step in assessing the economic importance of sports-related activities. For instance, what do policymakers mean when they discuss sports-related economic activities? What activities are considered part of the "sports economy?" What are the difficulties associated with accounting for these activities? Answering these basic questions allows governments to improve their policies.

The paper below assesses existing attempts to understand the sports economy and proposes a more nuanced way to consider the industry. Section 1 provides a brief overview of existing accounts of the sports economy. We first differentiate between three types of assessments: market research accounts conducted by consulting groups, academic accounts written by scholars, and structural accounts initiated primarily by national statistical agencies. We then discuss the European Union’s (EU) recent work to better account for and understand the sports economy. Section 2 describes the challenges constraining existing accounts of the sports economy. We describe two major constraints - measurement challenges and definition challenges - and highlight how the EU's work has attempted to address them. We conclude that, although the Vilnius Definition improves upon previous accounts, it still features areas for improvement.

Section 3 therefore proposes a paradigm shift with respect to how we understand the sports economy. Instead of primarily inquiring about the size of the sports economy, the approach recognizes the diversity of sports-related economic activities and of relevant dimensions of analysis. It therefore warns against attempts at aggregation before there are better data and more widely agreed upon definitions of the sports economy. It asks the following questions: How different are sports-related sectors? Are fitness facilities, for instance, comparable to professional sports clubs in terms of their production scheme and type of employment? Should they be understood together or treated separately? We briefly explore difference in sports-related industry classifications using data from the Netherlands, Mexico, and the United States. Finally, in a short conclusion, we discuss how these differences could be more fully explored in the future, especially if improvements are made with respect to data disaggregation and standardization.

cidwp_321_assessing_sports_economy.pdf
Neffke, F., Otto, A. & Weyh, A., 2016. Inter-industry Labor Flows.Abstract

Labor flows across industries reallocate resources and diffuse knowledge among economic activities. However, surprisingly little is known about the structure of such inter-industry flows. How freely do workers switch jobs among industries? Between which pairs of industries do we observe such switches? Do different types of workers have different transition matrices? Do these matrices change over time?

Using German social security data, we generate stylized facts about inter-industry labor mobility and explore its consequences. We find that workers switch industries along tight paths that link industries in a sparse network. This labor-flow network is relatively stable over time, similar for workers in different occupations and wage categories and independent of whether workers move locally or over larger distances. When using these networks to construct inter-industry relatedness measures they prove better predictors of local industry growth rates than co-location or input-based alternatives. However, because industries that exchange much labor typically do not have correlated growth paths, the sparseness of the labor-flow network does not necessarily prevent a smooth reallocation of workers from shrinking to growing industries. To facilitate future research, the inter-industry relatedness matrices we develop are made available as an online appendix to this paper.

rfwp_72.pdf
Neffke, F., Otto, A. & Hidalgo, C., 2016. The Mobility of Displaced Workers: How the Local Industry Mix Affects Job Search Strategies.Abstract

Establishment closures leave many workers unemployed. Based on employment histories of 20 million German workers, we find that workers often cope with their displacement by moving to different regions and industries. However, which of these coping strategies is chosen depends on the local industry mix. A large local presence of predisplacement or related industries strongly reduces the rate at which workers leave the region. Moreover, our findings suggest that a large local presence of the predisplacement industry induces workers to shift search efforts toward this industry, reducing the spatial scope of search for jobs in alternative industries and vice versa.

rfwp71_neffke.pdf
Jimenez, A., 2016. Increasing Exports of Albanian Cultivated Fish to the EU,Abstract

This document explores Albanian aquaculture in the context of European aquaculture and compares it to neighboring countries, especially Greece. Using information from fieldwork, multiple reports by the United Nations’ Food and Agriculture Organization (FAO), and interviews with experts in government and non-government institutions, we analyze the production of European seabass and Gilthead seabream in Europe in general and in Albania in particular. Albanian cultivation of seabass and seabream has increased sevenfold since production started in the early 2000’s, but it represented only 0.38% of European aquaculture of these two species in 2013. Albania has significantly lower productivity than its neighbors, especially Greece, the dominant actor in the market. The analysis indicates that Albania’s lower productivity is caused by: (i) high costs of cages, fingerlings, and feed; which are all imported; (ii) lack of a formal fish market; and (iii) lack of clarity in the regulation. The document concludes by offering recommendations to get over these impediments for growth including reducing tariffs; encouraging national production of cages, fingerlings, and feed through investment in research; offering more and better financing options for cage acquisition; improving quality controls; establishing a national fish market; and passing the Aquaculture Law to bring clarity to the sector regulation.

increasing_exports_of_albanian_aquaculture.pdf
Hausmann, R. & Neffke, F., 2016. The Workforce of Pioneer Plants.Abstract

Is labor mobility important in technological diffusion? We address this question by asking how plants assemble their workforce if they are industry pioneers in a location. By definition, these plants cannot hire local workers with industry experience. Using German social-security data, we find that such plants recruit workers from related industries from more distant regions and local workers from less-related industries. We also show that pioneers leverage a low-cost advantage in unskilled labor to compete with plants that are located in areas where the industry is more prevalent. Finally, whereas research on German reunification has often focused on the effects of east-west migration, we show that the opposite migration facilitated the industrial diversification of eastern Germany by giving access to experienced workers from western Germany.

pioneerplants_cid_wp_310.pdf
2015
Nedelkoska, L., Neffke, F. & Wiederhold, S., 2015. Skill Mismatch and the Costs of Job Displacement.Abstract
An increasing number of studies evidence large and persistent earning losses by displaced workers. We study whether these losses can partly be attributed to the skill mismatch that arises when workers’ human capital is underutilized at the new job. We develop a new method of measuring skill mismatch that accounts for asymmetries in the transferability of human capital between occupations, and link these measures to exceptionally rich German administrative data on individuals’ work histories. We find that displacement increases the probability of occupational switching and skill mismatch, primarily because displaced workers often move to less skill-demanding occupations. Event-study analyses show that these downskilled switchers suffer substantially larger displacement costs than occupational stayers. Workers moving to more skill-demanding occupations have similar earning losses as stayers, and do not experience any displacement costs conditional on being employed
2020-01-cid-fellows-wp-122-skills-job-deplacement.pdf
Nedelkoska, L. & Khaw, N., 2015. The Albanian Community in the United States: Statistical Profiling of the Albanian-Americans.Abstract

When the Albanian Communist regime fell in 1991-92, many Albanians saw their future outside the borders of Albania. At that time in history, no one anticipated the scale of migration that would take place in the subsequent two decades. Today, one third of Albania’s 1991 population lives abroad. Most of these migrants live and work in neighboring Greece and Italy. The third most popular destination is however the United States. Besides this new wave of migrants, the US has an old Albanian diaspora–the offspring of migrants who came to the US between the First and the Second World War. This is what mainly gives rise to the second generation Albanian-Americans.

To the best of our knowledge, there is currently no systematic documentation of the socio-demographic and economic characteristics of the Albanian community in the US. To bridge this gap, we use data from the American Community Survey 2012 and analyze these characteristics. The profiling could be of interest for anyone who focuses on the Albanians abroad – the Government’s Programs dealing with diaspora and migration issues, researchers interested in migration questions, the Albanian Community Organizations in the US or the diaspora members themselves.

We find that the first and the second generation Albanian-Americans have distinctive features. The first generation (those who arrived after the fall of Communism) is more educated than the non-Albanian Americans with comparable demographics. This is particularly true of Albanian women. The education of the second generation resembles more closely the US population with comparable demographic characteristics.

Despite the qualification advantage, first generation Albanian-Americans earn much less than non-Albanian Americans with comparable socio-demographic characteristics. We find that this is not associated with being Albanian per se but with being an immigrant more generally. The migrant-native gap narrows down with time spent in the US.

An important channel through which the current gap is maintained is qualification mismatch. We observe that first generation Albanian-Americans are over-represented in occupations requiring little skills and under-represented in occupations requiring medium and high skills, in direct contrast to them being more educated than non-Albanians.

When it comes to the earnings of second generation Albanian-Americans, the situation is more nuanced. The low skilled Albanian-Americans earn significantly more, and the highly skilled Albanian-Americans earn significantly less than the non-Albanian Americans with comparable socio-demographic characteristics. We currently do not have a straightforward explanation for this pattern.

The Albanian population in the US is highly concentrated in a few states: New York, Michigan and Massachusetts account for almost 60% of all Albanian Americans. The community in Massachusetts is the best educated; best employed and has the highest earnings among the three, but is also the oldest one in terms of demographics.

However, due to its sheer size (over 60,000 Albanian-Americans), New York is the host of most Albanians with BA degree (about 10,000). New York also hosts the largest number of high earning Albanians (about 1,800 earn at least $100,000 a year).

usadiasporaprofile_final.pdf
Nedelkoska, L. & Kosmo, M., 2015. Albanian-American Diaspora Survey Report.Abstract

This survey studies the ways in which active Albanian-Americans would like to engage in the development of their home countries. Its results will help us define the focus of the upcoming events organized under the Albanian Diaspora Program.

Between March 6th and March 22nd 2015, 1,468 Albanian-Americans took part in the online survey, of which 869 completed the survey. The results presented in this report are based on the answers of the latter group. The results of this survey do not represent the opinions of the general Albanian-American community, but rather the opinions of those who are more likely to engage in an Albanian Diaspora Program.

The survey was jointly prepared with the following Albanian-American organizations: Massachusetts Albanian American Society (MAAS/BESA), Albanian American Success Stories, Albanian Professionals in Washington D.C., Albanian Professionals and Entrepreneurs Network (APEN), Albanian-American Academy, Albanian American National Organization, and VATRA Washington D.C. Chapter. The survey was sponsored by the Open Society Foundations, as a part of the grant OR2013-10995 Economic Growth in Albania granted to the Center for International Development at Harvard University.

diaspora_survey_results_report_v5.pdf
Paul, B.V., 2015. Assessing the Medicinal and Aromatic Plants in Albania.Abstract

Harvard University’s Center for International Development and the Government of Albania has been engaged in a two year growth strategy exercise starting in 2013 till 2015. Discussions with the Ministry of Agriculture yielded that there is a need for conducting value chain studies on a few important product groups with the following objective:

  • Cultivate ‘value chain’ oriented thinking within the Ministry of Agriculture
  • Identify key issues ‘within’ the particular product groups and ‘across’ different product groups that need to be tackled at the public policy level

Here is a value chain study of the Medicinal & Aromatic Plants (MAPs), specifically of sage and lavender. The products have been chosen given its huge importance in the economy as the largest export commodity in agriculture and their contributions to a farmer’s income. A special black-belt team comprising ministry officials will take forward the findings of this study and will iteratively make policy, ensuring better policies and implementation at the same time.

medicinal_aromatic_plants.pdf
Kumar, R., 2015. Conditions for Re-Opening Exports of Albanian Mussels to to the EU.Abstract

The Centre for International Development (CID) at Harvard University has been leading a two year project with the Government of Albania to help identify and implement growth strategies by studying the constraints that bind specific sectors. In May this year, the Ministry of Agriculture tasked CID to look at the ban imposed by the European Union (EU) on the export of mussels from Albania. The research was sponsored by the Open Society Foundations, as a part of the grant OR2013-10995 Economic Growth in Albania granted to CID.

During the research project, we studied the value chain of mussel production and certification in Albania, mapped the requirements laid down by EU legislation and identified shortfalls in compliance. This report presents our findings and recommendations.

The Butrint lagoon is the main production center for mussels in Albania. By 1989, production from the lagoon had increased to 5,000 tons per year. It dropped dramatically in the 1990s due to an outbreak of cholera and the subsequent ban on the export of mussels by the EU. The ban has not been lifted since. Albania still cannot export mussels to the EU because these do not meet the required sanitary standards.

Our research finds that lack of reliable and affordable purification facilities is at the root of the problem. Unless this constraint is alleviated, it will continue to frustrate efforts to ensure compliance with standards.

albanian_mussels.pdf
Orozco, M., 2015. The Demand for and Supply of Nostalgic Products among the Albanian-Americans: A Survey,Abstract

The U.S. is home to more than 200,000 ethnic Albanians, about half of whom are emigrants from the Republic of Albania. Despite the significant Albanian population in the U.S., official trade of Albanian goods in the U.S. almost does not exist.

We surveyed about 200 Albanian-Americans and several stores offering goods imported from the Balkan region of Europe in three U.S. metropolitan areas with large Albanian population in order to study their purchasing habits. We found that the willingness to purchase products from the region of origin is certainly not matched by an adequate supply. The stores which offer such products are few, often hard to reach and offer limited supplies of a small variety of commodities. In the study, we recommend steps to strengthen the market for nostalgic good through continued market research, trade-related technical assistance, diaspora-donor partnerships for nostalgic trade development and trade fairs.

nostalgic_trade_albanian_americans.pdf
Ali, O., 2015. Revitalizing the Albanian Electricity Sector ,Abstract

In an attempt to recuperate its dysfunctional electricity distribution system, Albania privatized its sole electricity distribution company in 2009. Disappointed with the results of the privatization, just five years later, the State of Albania renationalized the company.

The case study “Revitalizing the Albanian Electricity Sector” analyzes the key sources of inefficiencies in the electricity distribution sector in Albania and the structural problems of the current state-owned company. It explains how the tariff setting and the failed infrastructural investments triggered a chain effect of financial instability which spilled beyond the limits of the electricity sector and discusses possible reforms to the sector.

ali_ozair_electricity_sector_albania_2015_final.pdf
2014
Ajzenman, N., 2014. Fresh Tomatoes: Ideas to Build a Productive Ecosystem.Abstract

During the last years production of fresh vegetables in Albania had an important growth due to the increase in the number of Ha using Greenhouses technologies. Many of the new investments came from former expats who spent a few years working abroad and came back -in some cases because of the crisis in Greece - with money and some experience in the field. However, although exports showed an important growth (in tomatoes, for example exports doubled from 2013 to 2011!), the sector has not been able to definitely take off and be a relevant player in the international market. The problem is not only that the share of Albania in the European trade is almost negligible but also that diversification didn't happen, quality has not improved and as a consequence the prices that Albanian producers get is very low - the lowest in Europe for some products like tomatoes. In this context, Albania has been focusing on the regional markets (probably not consciously but as a consequence of not having established a commercial relation with higher-end markets and not having a proper quality produce to offer), has been excluded from the best markets and has not improved the productive methods, practices, etc. Given this situation the building of new capacity was not necessarily a success: local markets started to be oversupplied and production losses are very high as a consequence.

In this report we analyzed the value chain of the fresh vegetables sector, focusing on the production of tomatoes. We detail the problems of the whole value chain (from the production to the marketing), pointing out the "missing links" that are preventing Albania to become a major tomato exporter in the European market. We find that there is a huge potential for the country - in terms of the natural conditions and also in terms of competitiveness -, but it is very difficult to be reached without making a re-organization of the sector to make it more integrated and give the proper incentives to solve simultaneously all the problems.

We found that in order to improve the general productivity of the sector it is not necessary to make huge capital disbursements. Although some of the constraints are clearly money-related, most of them are organization-related.

What the propose in this report is a method to re-organize the sector in a way that makes it easier for the economic agents to vertically and horizontally integrate and transform the sector into a "factory", where every participant has its defined role and work is divided with specific roles. The role of the Government is twofold: first, to facilitate the organization of this model, find the actors that can lead the change and provide them the incentives to coordinate. Second, to provide all the public goods that are now missing or incomplete (not only in terms of infrastructure but also in terms of marketing, negotiations, etc). In the next sections we explain with detail the constraints and missing links we found throughout the value chain of tomatoes and propose a new model to solve them. We show that with little organizational changes, Albania could increase its tomato exports by four times in a few years.

1408_tomatoes_value_chain_analysis_nicolas_ajzenman.pdf
Lawrence, R., Frasheri, E. & Qazi, M., 2014. Integration in the Balkans: Albania and Kosovo,Abstract

Despite their historic and ethnic ties, trade and investment between Albania and Kosovo remains underdeveloped. To be sure, even if fully developed, Kosovo is unlikely to play a major role in Albanian external economic relations. Nonetheless, increased economic integration between the two countries can serve as the basis not only for enhancing the ties between the two countries, but also for spurring the measures that could act as a springboard for Albania’s integration with respect to other countries in the Balkans as well as with the EU.  

integration_in_the_balkans-albania_and_kosovo_cid_report.pdf
2013
Hausmann, R., Dell’Erba, S. & Panizza, U., 2013. Debt Levels, Debt Composition, and Sovereign Spreads in Emerging and Advanced Economies.Abstract

This paper studies the relationship between sovereign spreads and the interaction between debt composition and debt levels in advanced and emerging market countries. It finds that in emerging market countries there is a significant correlation between spreads and debt levels. This correlation, however, is not statistically significant in countries where most public debt is denominated in local currency. In advanced economies, the magnitude of the correlation between debt levels and spreads is about one fifth of the corresponding correlation for emerging market economies. In Eurozone countries, however, the correlation between spreads and debt ratios is similar to that of emerging market countries. The paper also shows that the financial crisis amplified the relationship between spreads and debt levels within the Eurozone but had no effect on the relationship between spreads and debt in standalone countries. Finally, the paper shows that the relationship between debt levels and spreads is amplified by the presence of large net foreign liabilities. This amplifying effect of net foreign liabilities is larger in the Eurozone than in standalone advanced economies. The paper concludes that debt composition matters and corroborates the original sin hypothesis that, rather than being a mere reflection of institutional weaknesses, the presence of foreign currency debt increases financial fragility and leads to suboptimal macroeconomic policies.

cid_working_paper_263.pdf
2012
Frankel, J., 2012. What Small Countries Can Teach the World.Abstract

The large economies have each, in sequence, offered "models" that once seemed attractive to others but that eventually gave way to disillusionment. Small countries may have some answers. They are often better able to experiment with innovative policies and institutions and some of the results are worthy of emulation. This article gives an array of examples. Some of them come from small advanced countries: New Zealand’s Inflation Targeting, Estonia’s flat tax, Switzerland’s debt brake, Ireland’s FDI policy, Canada’s banking structure, Sweden’s Nordic model, and the Netherlands’ labor market reforms. Some examples come from countries that were considered "developing" 40 years ago, but have since industrialized. Korea stands for education; among Singapore’s innovative polices were forced saving and traffic congestion pricing; Costa Rica and Mauritius outperformed their respective regions by, among other policies, foreswearing standing armies; and Mexico experimented successfully with the original Conditional Cash Transfers. A final set of examples come from countries that export mineral and agricultural commodities -- historically vulnerable to the "resource curse" -- but that have learned how to avoid the pitfalls: Chile’s structural budget rules, Mexico’s oil option hedging, and Botswana’s "Pula Fund."

cid_working_paper_232.pdf
Rodrik, D., 2012. Who Needs the Nation State?.Abstract

The nation state has few friends these days. It is roundly viewed as an archaic construct that is at odds with 21st century realities. It has neither much relevance nor much power, analysts say. Increasingly, it is non-governmental organizations, global corporate social responsibility, or global governance on which pundits place their faith to achieve public purpose and social goals. It is common to portray national politicians as the sole beneficiary of the nation state, on which their privileges and lofty status depend.

The assault on the nation state transcends traditional political divisions, and is one of the few things that unite economic liberals and socialists. "How may the economic unity of Europe be guaranteed, while preserving complete freedom of cultural development to the peoples living there?" asked Leon Trotsky in 1934. The answer was to get rid of the nation state: "The solution to this question can be reached ... by completely liberating productive forces from the fetters imposed upon them by the national state."2Trotsky’s answer sounds surprisingly modern in light of the euro zone’s current travails. It is one to which most neoclassical economists would subscribe.

cid_working_paper_253.pdf

Pages