organised by the University of Ankara, Faculty of Agriculture, Department of Soil Science ; OECD-Organisation for Economic Co-operation and Development, Agriculture Cooperative Research Programme (2002-2004) ; editors, James M. Lynch, James S. Schepers, Ilhami Ünver
Direction de l'alimentation, de l'agriculture et des pêcheries, Organisation de coopération et de développement économique = OECD schemes for the varietal certification of seed moving in international trade : list of cultivars eligible for certification, 1990 / Directorate for Food, Agriculture, and Fisheries, Organisation for Economic Co-operation and Development