Proceedings of the symposium on the sustainability of agricultural production systems in sub-saharan Africa, 4-7 September 1989, Aas, Norway 1990
Proceedings of the International seminar for policy makers on the contribution of organic agriculture to sustainable rural development in Central and Eastern Europe, held in Castle Rudolec, Bohdalov, Czech Republic, 14th-17th October 1993 1994 Znaor, Darko |
Population, resources, environment : issues in human ecology 1972 Ehrlich, Paul R. | Ehrlich, Anne H. |
L'alimentation en forêt tropicale : interactions bioculturelles et perspectives de développement 1996 Hladik, C. M. (Claude Marcel) | Hladik, Annette | Pagezy, Hélène | Linares, Olga F. | Koppert, Georgius J. A. | Froment, Alain |
Priorities for a new century. Agriculture, food and rural policies in the European Union. Conference 1994