Labour use and productivity in new fallow systems as alternatives to slashandburn agriculture in the derived savannas of Nigeria

Chianu, J.N., Spencer, D.S.C. & Atobatele, J.T. (2000). Labour use and productivity in new fallow systems as alternatives to slash-and-burn agriculture in the derived savannas of Nigeria. In G. Renard, S. Krieg, P. Lawrence, and M. von Oppen (eds.). Farmers and scientists in a changing environment: assessing research in West Africa, Weikersheim, Germany: Margraf Verlag, (p. 429-438).