@INBOOK {OSINAME:1991, title = {On-farm evaluation of improved cassava varieties in the Kasangulu zone of Bas-Zaire}, author = {Osiname, O. * and Simba, L. and Bartlett, C. D. and Mayala, R. and Kasongo, K. }, year = {1991}, type = {On-farm research in theory and practice, edited by H.J.W. Mutsaers and P. Walker}, pages = {168--173}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {RTB; Root and Tuber; Cassava}, }