TY - BOOK AU - Powell, J. M. AU - Williams, T. O. TI - Livestock, nutrient cyclingand sustainable agriculture in the West African Sahel T2 - International Institute for Environment and Development. Gatekeeper series PY - 1993/// CY - London PB - International Institute for Environment and Development KW - Agricultura sustentable KW - Agricultura KW - Sahel KW - Ganadería KW - Productos agrícolas KW - Subproductos ER -