Evaluation of agri-environmental policies : selected methodological issues and case studies - Paris [Francia] : Organisation for Economic Co-operation and development, 2012 - 254 p. : 28 cm., gráf. ISBN: 978-92-64-17932-5 Subjects--Topical Terms: COOPERACIÓN INTERNACIONAL AGRÍCOLA Dewey Class. No.: OCDE 338.181 E926e 2012