Utilization of research results on forage and agricultural by-product materials as animal feed resources in Africa :  proceedings of the first joint workshop held in Lilongwe, Malawi 5 - 9 December 1988 / 
by the Pastures Network for Eastern and Southern Africa (PANESA) and African Research Network for Agricultural By-products (ARNAB); edited by B.H. Dzowela...[et al.]. 
 - Addis Ababa(Ethiopia) :  PANESA/ARNAB,  1990. 
 - vii, 833 p.