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Registros recuperados: 25
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An Approach to Assess Relative Degradation in Dissimilar Forests: Toward a Comparative Assessment of Institutional Outcomes Ecology and Society
Tucker, Catherine M.; Indiana University, Bloomington, Indiana; tuckerc@indiana.edu; Randolph, J. C.; Indiana University, Bloomington, Indiana; randolph@indiana.edu; Evans, Tom; Indiana University, Bloomington, Indiana; evans@indiana.edu; Andersson, Krister P.; University of Colorado, Boulder, Colorado;; Persha, Lauren; Indiana University, Bloomington, Indiana;; Green, Glen M.; Indiana University, Bloomington, Indiana;.
A significant challenge in the assessment of forest management outcomes is the limited ability to compare forest conditions quantitatively across ecological zones. We propose an approach for comparing different forest types through the use of reference forests. We tested our idea by drawing a sample of 42 forests from the Midwest USA, Mexico, Guatemala, Honduras, Brazil, Bolivia, Uganda, and Nepal. We grouped these forests by shared characteristics and selected a reference forest to serve as a baseline for each forest type. We developed an index of disturbances using ratios of several forest measurements to assess differences between each study forest and its reference forest. None of the study forests was known to have been impacted by major natural...
Tipo: Peer-Reviewed Insight Palavras-chave: Biophysical factors; Comparative analysis; Forest management; Institutions; Multidisciplinary methodology; Reference forests.
Ano: 2008
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ANÁLISIS DE PRECIOS DE PRODUCTOS BÁSICOS EN TIENDAS DE AUTOSERVICIO DE PACHUCA Y EL COMERCIO DE ZACUALTIPÁN, HIDALGO, 2007-2008 AgEcon
Terrones Cordero, Anibal; Sanchez Torres, Yolanda; Hernandez Martinez, Juvencio.
This research was conducted in shops self-service of Pachuca and local commerce of Zacualtipán, were recorded prices of 24 products: rice, tortilla, tomato, lemon, jalapeno chile, milk, eggs, ham, sausage, beef, chicken meat, toilet paper, soap powder, toilet soap, toothpaste, beans, onions, potatoes, avocado, orange, banana, oil, salt and sugar. The dates for consulting prices were: July 26, 2007, on January 25 and May 29, 2008. The importance of this study is the comparative analysis and trends in prices. The shops self-service offer 9.7% cheaper in 62.5% of the products. The local commerce offer the 12.7% cheaper than the shops self-service in beans, onions, potatoes, avocados, bananas, oil, salt and sugar. During the July 26, 2007 to May 29, 2008,...
Tipo: Journal Article Palavras-chave: Price; Commodities; Small and medium enterprises; Shops self-service; Comparative analysis; Trade.; Agribusiness.
Ano: 2009 URL: http://purl.umn.edu/53108
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Anatomia comparada de folhas de pimenta longa (Piper hispidinervum C. DC.) e pimenta de macaco (Piper aduncum L.) cultivadas in vitro, ex vitro e in vivo. Repositório Alice
MACIEL, S. de A.; TEIXEIRA, R. B.; RAPOSO, A.; FERMINO JUNIOR, P. C. P..
Piper hispidinervum e Piper aduncum apresentam compostos metabólitos secundários como safrol e dilapiol de interesse comercial em seus óleos essenciais. O trabalho teve como objetivo comparar aspectos anatômicos, relacionados a respostas isiológicas das folhas de P. hispidinervum e P. aduncum propagadas in vitro, in vivo e durante a aclimatização. Secções paradérmicas e transversais da lâmina foliar do cultivo in vitro, ex vitro e in vivo, feitas à mão-livre foram realizadas para a medição das estruturas anatômicas em microscópio de luz. A espessura da epiderme e hipoderme de P. hispidinervum e P. aduncum sofrem alterações na transição de cultivo in vitro para o ex vitro. Os tecidos do mesoilo e a abertura do poro estomático de ambas as espécies são...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Pimenta de macaco; Monkey pepper; Piper aduncum; Cultura ex vitro; Cultura in vivo; Comparative analysis; Análisis comparativo; Micropropagação; Pimenta longa; Piper hispidinervum; Anatomia vegetal; Folha; Análise comparativa; Cultura in vitro; Micropropagation; Piper longum; Leaf area; In vitro culture; In vivo studies; Micropropagación; Área foliar; Cultivo in vitro; Estudios in vivo.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1001318
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Anatomia foliar comparativa de nove espécies do gênero Piper (Piperaceae). Repositório Alice
GOGOSZ, A. M.; BOEGER, M. R. T.; NEGRELLE, R. R.; BERGO, C. L..
As espécies de Piper são de grande interesse medicinal. Porém apresentam considerável desafio taxonômico, provavelmente pelo diminuto tamanho das partes florais. Por isso a morfologia externa da folha tem sido muito utilizada para taxonomia do grupo. Entretanto, há poucos trabalhos anatômicos para o gênero. Neste estudo, as folhas de nove espécies foram comparadas anatomicamente: Piper aduncum Vell.; P. cernuum Vell.; P. dilatatum Rich; P. gaudichaudianum Kunth; P. glabratum Kunth; P. hispidinervum C. DC.; P. lindbergii C. DC.; P. solmsianum C. DC. e P. umbellatum Jacq. O objetivo era avaliar o potencial dos caracteres anatômicos para separação de espécies. A maioria das espécies estudadas tem a epiderme do limbo constituída por células retangulares e...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Comparative analysis; Piperaceae; Anatomia vegetal; Folha; Análise comparativa; Pepper; Plant anatomy; Leaves; Anatomía de la planta; Hojas; Pimienta.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/943205
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Comparative Research on the Economic Development of Xinjiang in the Perspective of Development of the West Regions AgEcon
Liu, Wenqiang; Xuehelaiti, Mahemuti.
In the context of Development of the West Regions, by using the annual data from 1999 to 2009 in whole China and 12 provinces of the western regions, we analyze the achievements of socio-economic development of Xinjiang Uygur Autonomous Region from 1999 to 2009 as follows: the economic aggregate has increased prominently and the growth rate is increasing ceaselessly; the primary industry, secondary industry and tertiary industry develop evenly, and the industrial structure is incessantly optimized; the quality of economic growth is promoted increasingly and the living standard of people is improved greatly; the primary industry, secondary industry and tertiary industry stride in tandem, and the momentum of growth is strong. We conduct horizontal comparison...
Tipo: Journal Article Palavras-chave: Development of the West Regions; Xinjiang; Economic development; Comparative analysis; China; Agribusiness.
Ano: 2011 URL: http://purl.umn.edu/118285
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Diversidade genética de populações de andiroba no Baixo Acre. Repositório Alice
RAPOSO, A.; MARTINS, K.; CIANPI, A. Y; WADT, L. H. de O.; VEASEY, E. A..
O objetivo deste trabalho foi avaliar a diversidade genética em duas populações de Carapa guianensis Aubl. (andiroba), no Estado do Acre, e comparar os parâmetros de diversidade com os observados em outras populações da espécie (no Brasil: Flona Tapajós, PA, Porto Acre, AC; e na Costa Rica). Foram avaliados 77 indivíduos adultos com sete locos polimórficos de microssatélites. Observaram-se 51 alelos nas duas populações, em que o número efetivo de alelos por loco (Âe = 3,2) foi inferior ao número médio de alelos por loco (Â = 7,3), o que indica elevado número de alelos com baixa freqüência. Os valores estimados de f não diferiram de zero, o que mostra que não ocorre endogamia nas populações. A taxa de cruzamento aparente foi alta (ta = 1,11 na população...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Crabwood; Marcador microssatélite; Microssatelite markers; Comparative analysis; Análisis comparativo; Baixo Acre; Amazônia Ocidental; Andiroba; Carapa guianensis; Variação genética; Marcador molecular; Alelos; População de planta; Análise comparativa; Genetic variation; Genetic markers; Population; Alleles; Western Amazon; Variación genética; Marcadores genéticos; Población; Amazonia Occidental.
Ano: 2007 URL: http://www.alice.cnptia.embrapa.br/handle/doc/497670
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Equity and REDD+ in the Media: a Comparative Analysis of Policy Discourses Ecology and Society
Di Gregorio, Monica; University of Leeds, Sustainability Research Institute; m.digregorio@leeds.ac.uk; Brockhaus, Maria; Center for International Forestry Research; m.brockhaus@cgiar.org; Cronin, Tim; WWF Australia; timpcronin@hotmail.com; Muharrom, Efrian ; Center for International Forestry Research; e.muharrom@cgiar.org; Santoso, Levania; Center for International Forestry Research; l.santoso@cgiar.org; Mardiah, Sofi; Center for International Forestry Research; s.mardiah@cgiar.org.
Reducing emissions from deforestation and forest degradation (REDD+) is primarily a market-based mechanism for achieving the effective reduction of carbon emissions from forests. Increasingly, however, concerns are being raised about the implications of REDD+ for equity, including the importance of equity for achieving effective carbon emission reductions from forests. Equity is a multifaceted concept that is understood differently by different actors and at different scales, and public discourse helps determine which equity concerns reach the national policy agenda. Results from a comparative media analysis of REDD+ public discourse in four countries show that policy makers focus more on international than national equity concerns, and that they neglect...
Tipo: Peer-Reviewed Reports Palavras-chave: Comparative analysis; Discourse; Equity; Media analysis; Mitigation; REDD+.
Ano: 2013
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Evaluation of the Efficiency of Agricultural Holdings in View of Structural Changes in Estonia AgEcon
Matveev, Eduard.
This presentation provides comparative analysis of agricultural holdings in Estonia based on the Farm Accountancy Data Network (FADN) data. The FADN data for reference years 2000, 2001, 2002 and 2003 have been analysed. The FADN data analyses showed, that there are very big differences in the structure of the agricultural holdings. Individual farms represent ca 92% of the total population of agricultural producers but at the same time their part in total production attains less than 50% according to the FADN data for year 2003.
Tipo: Conference Paper or Presentation Palavras-chave: Comparative analysis; Economic efficiency; Estonia; Farm income; Land ownership; Net value added; Land Economics/Use.
Ano: 2005 URL: http://purl.umn.edu/24423
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Fatty acid composition of wild edible mushrooms species: a comparative study IPB - Escola Superior Agrária
Ribeiro, Bárbara; Pinho, P. Guedes de; Andrade, P.B.; Baptista, Paula; Valentão, P..
A comparative study was developed on the total fatty acids composition of twelve wild edible mushroom species (Suillus bellini, Suillus luteus, Suillus granulatus, Hygrophorus agathosmus, Amanita rubescens, Russula cyanoxantha, Boletus edulis, Tricholoma equestre, Fistulina hepatica, Cantharellus cibarius, Amanita caesarea and Hydnum rufescens). In order to define qualitative and quantitative profiles, combined fatty acids were hydrolyzed with potassium hydroxide/methanol and all free compounds were derived to their methyl ester forms with methanolic boron trifluoride, followed by analysis by GC-MS. Thirty fatty acids were determined. As far as we know, the fatty acid profiles of A. caesarea and H. rufescens are described for the first time. As for the...
Tipo: Article Palavras-chave: Wild edible mushrooms; Fatty acids; Comparative analysis.
Ano: 2009 URL: http://hdl.handle.net/10198/4409
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FÖRDERUNG DER ENTWICKLUNG DES LÄNDLICHEN RAUMES IN POLEN UND BAYERN AgEcon
Sroka, Wojciech; Happe, Kathrin.
This paper compares the polish Programme for Rural Development (PROW) and the Bavarian counterpart (BayZAL). The focus is on comparing objectives and Instruments. The different development axes are at the centre of the analysis. The two programmes differ with regard to funding. The programmes are based on differing philosophies concerning the funding of different measures. These are due to differences in economic development and the quality of the human capital in rural areas. Both programmes emphasise measures related to agriculture despite of the claim to target at the whole rural area.
Tipo: Working or Discussion Paper Palavras-chave: Entwicklung ländlicher Räume; Vergleichende Analyse; Polen; Bayern; Rural development; Comparative analysis; Poland; Bavaria; Community/Rural/Urban Development; Institutional and Behavioral Economics; International Development; Q12; Q18.
Ano: 2009 URL: http://purl.umn.edu/91904
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How Multilevel Societal Learning Processes Facilitate Transformative Change: A Comparative Case Study Analysis on Flood Management Ecology and Society
Becker, Gert; Institute for Environmental Studies, VU University Amsterdam; gert.becker@ivm.vu.nl; Sendzimir, Jan; International Institute for Applied Systems Analysis; sendzim@iiasa.ac.at.
Sustainable resources management requires a major transformation of existing resource governance and management systems. These have evolved over a long time under an unsustainable management paradigm, e.g., the transformation from the traditionally prevailing technocratic flood protection toward the holistic integrated flood management approach. We analyzed such transformative changes using three case studies in Europe with a long history of severe flooding: the Hungarian Tisza and the German and Dutch Rhine. A framework based on societal learning and on an evolutionary understanding of societal change was applied to identify drivers and barriers for change. Results confirmed the importance of informal learning and actor networks and their connection to...
Tipo: Peer-Reviewed Reports Palavras-chave: Adaptive management; Comparative analysis; Integrated flood protection; Rhine; Societal learning; Tisza; Transformative change; Water governance.
Ano: 2013
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Institutional Fit and River Basin Governance: a New Approach Using Multiple Composite Measures Ecology and Society
Lebel, Louis; Chiang Mai University, Thailand; llebel@loxinfo.co.th; Nikitina, Elena; Ecopolicy, Moscow, Russian Federation; elenanikitina@bk.ru; Pahl-Wostl, Claudia; Institute of Environmental Systems Research, University of Osnabrueck, Germany; pahl@usf.uni-osnabrueck.de; Knieper, Christian; Institute of Environmental Systems Research, University of Osnabrueck, Germany; cknieper@uni-osnabrueck.de.
The notion that effective environmental governance depends in part on achieving a reasonable fit between institutional arrangements and the features of ecosystems and their interconnections with users has been central to much thinking about social-ecological systems for more than a decade. Based on expert consultations this study proposes a set of six dimensions of fit for water governance regimes and then empirically explores variation in measures of these in 28 case studies of national parts of river basins in Europe, Asia, Latin America, and Africa drawing on a database compiled by the Twin2Go project. The six measures capture different but potentially important dimensions of fit: allocation, integration, conservation, basinization, participation, and...
Tipo: Peer-Reviewed Reports Palavras-chave: Comparative analysis; Indicators; Institutional fit; Measuring fit; River basin management; Water governance.
Ano: 2013
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Large-scale evolutionary patterns of host plant associations in the Lepidoptera Naturalis
Menken, S.B.J.; Boomsma, J.J.; Nieukerken, E.J. van.
We characterized evolutionary patterns of host plant use across about 2500 species of British Lepidoptera, using character optimization and independent phylogenetic contrasts among 95 operational taxa, and evaluated the extent to which caterpillars are monophagous, use woody host plants, and feed concealed. We also analyzed the use of different Angiosperm superorders and related these associations to other key variables. The Nepticulidae, Pterophoridae, and Gracillariidae allowed explicit comparisons between the British fauna and the Lepidoptera worldwide, which indicated that our broad categorizations for Britain are accurate predictors for the global fauna. The first (lower glossatan) radiation of the Lepidoptera started with monophagous, internal...
Tipo: Article / Letter to the editor Palavras-chave: Comparative analysis; Diet breadth; External feeding; Eurosids I; Phytophagous insects; 42.21; 42.75.
Ano: 2010 URL: http://www.repository.naturalis.nl/record/364237
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Las reformas curriculares de Perú, Colombia, Chile y Argentina: ¿quién responde por los resultados? AgEcon
Ferrer, Guillermo.
Este trabajo de investigación analiza los procesos de reforma curricular de Perú, Colombia, Chile y Argentina en los años noventa, centrando la atención en los mecanismos de elaboración e implementación curricular, así como en la evaluación de los resultados de aprendizaje y en el uso de las evaluaciones para el mejoramiento de las políticas y las prácticas curriculares. El análisis resalta los esfuerzos nacionales por hacer de las reformas curriculares un proceso política y pedagógicamente participativo, a la vez que revela la lógica dominantemente burocrática y carente de responsabilización por los resultados que posiblemente neutralizó el impacto de esos esfuerzos. Las comparaciones internacionales muestran características y tendencias comunes a los...
Tipo: Working or Discussion Paper Palavras-chave: Currículo; Elaboración del currículo; Evaluación del currículo; Reformas de la educación; Análisis comparativo; Perú; Chile; Argentina; Colombia; Curriculum; Curriculum development; Curriculum evaluation; Educational reform; Comparative analysis; Peru; I2.
Ano: 2004 URL: http://purl.umn.edu/37735
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National REDD+ policy networks: from cooperation to conflict Ecology and Society
Brockhaus, Maria; Center for International Forestry Research; m.brockhaus@cgiar.org; Di Gregorio, Monica; University of Leeds, Sustainability Research Institute; m.digregorio@leeds.ac.uk.
Reducing emissions from deforestation and forest degradation (REDD+) is a financial mechanism aimed at providing incentives to reduce carbon emissions from forests and enhance carbon stocks. In most forest-rich developing countries, policy actors, i.e., state and nonstate as well as international and national, are designing national REDD+ policies. Actors’ interests and beliefs shape patterns of interactions, ranging from cooperation to conflict, and these interactions influence a country’s direction and progress in REDD+ policy formulation and implementation. We used a comparative policy network approach to analyze the power structures in national REDD+ policy domains in seven countries. We drew on the typology of power structures...
Tipo: Peer-Reviewed Reports Palavras-chave: Comparative analysis; Conflict; Cooperation; Policy networks; Power; REDD+; Social network analysis.
Ano: 2014
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On-Farm Benchmarking: How to Do It and How to Do It Better AgEcon
Franks, J.R.; Collis, Jimi.
Benchmarking is the practice of establishing the relative performance of a business or enterprise against an appropriate standard, generally industry standards derived from a survey of farms. The Policy Commission into the Future of Farming and Food (2002) highlighted a need to spread and improve benchmarking on farms. The requirements of effective benchmarking are illustrated in a ten step framework. The ten steps illustrate the range of expertise and resources a manager requires before being able to justify allocating resources to benchmarking. A comparison of alternative farm surveys and methodologies used to collect, analyse and report industry standards illustrates the difficulties farmers can have in identifying appropriate, robust and accurate...
Tipo: Conference Paper or Presentation Palavras-chave: Benchmarking; Comparative analysis; Processes; Industry standards; Methodology; Techniques; Farm Management.
Ano: 2003 URL: http://purl.umn.edu/24326
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Queensland Dairy Accounting Scheme 2004 Results and Analysis AgEcon
Murphy, Ray; Busby, Graeme.
This paper provides an overview of the operation of the Queensland Dairy Accounting Scheme (QDAS) and the results and analysis of the 2003-04 data. QDAS is a voluntary scheme providing dairy farmers with an analysis of their dairy business. Key indictors measure performance and the results are then compared against benchmarks and personal targets. Analysis of data has shown that the profit drivers on the most profitable farms in QDAS, are production per cow, herd size, use of homegrown feeds and use of nitrogen fertiliser.
Tipo: Conference Paper or Presentation Palavras-chave: Benchmarking; Diary business analysis; Comparative analysis; Agricultural Finance; Livestock Production/Industries.
Ano: 2005 URL: http://purl.umn.edu/24223
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REDD+ policy networks: exploring actors and power structures in an emerging policy domain Ecology and Society
Brockhaus, Maria; Center for International Forestry Research; m.brockhaus@cgiar.org; Di Gregorio, Monica; University of Leeds, Sustainability Research Institute; m.digregorio@leeds.ac.uk; Carmenta, Rachel; Center for International Forestry Research; R.Carmenta@cgiar.org.
Policy making is often neither rational nor solution-oriented, but driven by negotiations of interests of multiple actors that increasingly tend to take place in policy networks. Such policy networks integrate societal actors beyond the state, which all aim, to different degrees, at influencing ongoing policy processes and outcomes. Reducing Emissions from Deforestation and Forest Degradation (REDD+) can be considered as such an emerging policy domain, in which actors cooperate and conflict in network structures, build coalitions and try to control information and finance flows relevant for REDD+ decision making. This special feature is the result of an extensive comparative research effort to investigate national level REDD+ policy processes and emerging...
Tipo: Peer-Reviewed Synthesis Palavras-chave: Agency; Climate change; Comparative analysis; Discourse coalitions; Policy network analysis; Power; REDD+; SNA; Transformational change.
Ano: 2014
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Scaling of Natal Dispersal Distances in Terrestrial Birds and Mammals Ecology and Society
Sutherland, Glenn D; University of British Columbia; gsland@interchg.ubc.ca; Harestad, Alton S; Simon Fraser University; harestad@sfu.ca; Price, Karen; Simon Fraser University; kprice@futurenet.ca; Lertzman, Ken; Simon Fraser University; lertzman@sfu.ca.
Natal dispersal is a process that is critical in the spatial dynamics of populations, including population spread, recolonization, and gene flow. It is a central focus of conservation issues for many vertebrate species. Using data for 77 bird and 68 mammal species, we tested whether median and maximum natal dispersal distances were correlated with body mass, diet type, social system, taxonomic family, and migratory status. Body mass and diet type were found to predict both median and maximum natal dispersal distances in mammals: large species dispersed farther than small ones, and carnivorous species dispersed farther than herbivores and omnivores. Similar relationships occurred for carnivorous bird species, but not for herbivorous or omnivorous ones....
Tipo: Peer-Reviewed Reports Palavras-chave: Allometric scaling; Birds; Body mass; Comparative analysis; Connectedness; Diet type; Habitat alterations; Life history; Mammals; Movements; Natal dispersal distances; Probability density function.
Ano: 2000
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SOME ECONOMIC ASPECTS OF THE HUNGARIAN BIOFUEL PROGRAMS AgEcon
Lakner, Zoltan; Szabo-Burcsi, Dora; Mago, Laszlo.
The use of renewable materials in energy production is gaining in importance all over the world. The production of bioethanol and biodiesel is an important element of the agricultural strategy of numerous countries, even though the economic and environmental impact of these projects is subject to significant debates. Our paper analyses the welfare effects of the Hungarian bioethanol programme, as well as the economic feasibility of the projects. It can be demonstrated that the Hungarian bioethanol programme will cause a rather marginal increase in agricultural prices. The cost of bioethanol production is estimated between 470 and 630 €/m3, influenced by numerous factors. This estimate is in line with the average European values. The possibilities for...
Tipo: Journal Article Palavras-chave: Comparative analysis; Simulation; Return on investment; Welfare economics; Beruházás-gazdaságosság; Összehasonlító vizsgálat; Jóléti elemzés; Szimuláció.; Agricultural and Food Policy; Environmental Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/99205
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