TY - GEN AU - Christoph,M. AU - Speth,P. TI - IMPETUS West Africa: an integrated approach to the efficient management of scarce water resources in West Africa : case studies for selected river catchments in different climatic zones U1 - 333.9115096683 21E KW - RESSOURCES AQUATIQUES KW - PROJET KW - DEVELOPPEMENT KW - DRAA KW - OUARZAZATE KW - BENIN N1 - Bibliogr. p. 286- ER -