By-product utilization for animal production : Proceedings of a workshop on applied research held in Nairobi, Kenya, 26-30 September 1982 / editors : Berhane Kiflewahid, Gordon R. Potts, and Robert M. Drysdale - Ottawa : s. n., 1983 - 158 p IDRC-206e Subjects--Topical Terms: Waste products--CongressesAgricultural wastes--Congresses LC Class. No.: SF99 W34 I5