Livestock, nutrient cycling and sustainable agriculture in the West African Sahel /
Powell, J. M.(Jocelyn M.)
Williams, Timothy O.
International Institute for Environment and Development.Sustainable Agriculture Programme.
London, U.K. : Sustainable Agriculture Programme, International Institute for Environment and Development,
1993.
Cover title.
Includes bibliographical references (p. 11-13).
Sustainable agriculture
Sustainable agriculture