Speirs, MikeOlsen, Ole2016-04-192016-04-191992World Bank Technical Paper No. 179 Africa Technical Department Series0253-7494http://hdl.handle.net/10919/66962The principal objective of this study was to examine alternative ways through which the integration of animal production with crop production could contribute to an intensification of both food and cash crop production and encourage the maintenance of soil fertility in the Sahelian region of West Africa.application/pdfen-USIn CopyrightFarming systemsLivestockSoil fertilityAnimal producionCrop productionEcosystemReportCopyright 1992 World Bank