@PROCEEDINGS {HAHN:1980h, title = {Cassava improvement at IITA in relation to National Programs in Africa}, author = {Hahn, S. K. }, booktitle = {Paper presented at "Cassava Production and Extension Workshop held at PRONAM, INERA, Mvuazi, Zaire, May 19-22, 1980}, year = {1980}, note = {RTB; Root and Tuber; Cassava}, }