Irrigation and the socio-economic system of the Soninke in the Bakel region (Senegal River Valley) Workshop on sahelian agriculture /Weigel, Jean-Yves IRRIGATION CULTURE IRRIGUEE AGRICULTURE TRADITIONNELLE DEVELOPPEMENT RURAL PERIMETRE IRRIGUE INTERVENTION DE L'ETAT ORGANISME DE DEVELOPPEMENT SYSTEME DE PRODUCTION ORGANISATION DU TRAVAIL FONCIER RURAL ACCES A LA TERRE ORSTOM 1980 text https://www.documentation.ird.fr/hor/fdi:010011901 fdi:010011901 Weigel Jean-Yves. Irrigation and the socio-economic system of the Soninke in the Bakel region (Senegal River Valley). In : . Workshop on sahelian agriculture ORSTOM, 1980, 36 multigr. Workshop on Sahelian Agriculture, Purdue University (USA), 1980/05 FR SENEGAL FLEUVE