Intensification and competitiveness of smallholder dairy production systems in the greater Nairobi Milk-Shed - Baltenweck, Isabelle; Staal, Steven J.; Owango, M.O.; Muriuki, H.; Lukuyu, Ben A.; Gichungu, G.; Kenyanjui, M.; Njubi, D.; Tanner, J.C.; Thorpe, W.R. (Smallholder Dairy Project, 1998)