@INPROCEEDINGS {HAHN:1991a, title = {Cassava in Africa: towards a broader genetic base}, author = {Hahn, S. K. and Asiedu, R. and Dixon, A. and Porto, M. C. M. and Bai, K. V. }, editor = {Alvarez, M. N. and Asiedu, R. }, booktitle = {The role of root crops in regional food security and sustainable agriculture: proceedings of the Fourth Eastern and Southern Africa Regional Root Crops Workshop, 29 Oct - 2 Nov. 1990, Mansa, Zambia}, year = {1991}, pages = {45--52}, note = {RTB; Root and Tuber; Cassava}, }