@PROCEEDINGS {EZUMAH:1980e, title = {Cassava improvement by the Program Manioc in Zaire}, author = {Ezumah, H. C. }, booktitle = {Paper presented at the 1st Triennial Conference of the International Society for Tropical Root Crops, African Branch, IITA, Ibadan, 8-12 September}, year = {1980}, note = {RTB; Root and Tuber; Cassava}, }