1. A bibliography on forage legumes in Africa;Agishi,1991
2. Pasture research in Burundi;Astére,1985
3. The potential contribution of some forage crops to the nitrogen budget and animal feed in the Sudan Gezira farming system;Ayoub,1986
4. Range Ecology and Disequilibrium,1993
5. No Condition is Permanent: The Social Dynamics of Agrarian Change in Sub-Saharan Africa;Berry,1993