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Van Damme P. Ministère de La Cooperation et du Developpement, 1987. Recherche, Vulgarisation et Developpement Rural en Afrique Noire. Colloque de Yamoussoukro. Paris, 245 pp. AF [nternet]. 1990 Nov. 11 [cited 2024 Nov. 15];6(2). vailable from: http://206.189.126.38:8087/index.php/AF/article/view/18105