Powell, J. M.

Livestock, nutrient cyclingand sustainable agriculture in the West African Sahel - London : International Institute for Environment and Development, 1993 - 15 p - International Institute for Environment and Development. Gatekeeper series ; 37 . - International Institute for Environment and Development. Gatekeeper series ; 37 .

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Agricultura sustentable.
Agricultura--Sahel.
Agricultura--Sahel.
Ganadería--Sahel.
Productos agrícolas--Subproductos.