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1Education and training in organic agriculture: present situation and polar aspects of educational content Education and training in organic agriculture: present situation and polar aspects of educational contentby Van Mansvelt, J.D. (Landbouwuniversiteit, Wageningen (Netherlands). Dept. of Ecological Agriculture), FAO, Rome (Italy). Regional Office for Europe eng, Kolster, P., Besson, J.-M. (ed.), Station Federale de Recherches en Chimie Agricole et sur l'Hygiene de l'Environnement, Liebefeld (Switzerland) fre
Published 1990Texto bibliotecaFAO IT