@INPROCEEDINGS {OKOGBENIN:1994, title = {Expanding the genetic base of cassava in Africa: progress and prospects}, author = {Okogbenin, E. * and Porto, M. C. M. and Dixon, A. and Ekanayake, I. J. }, booktitle = {Proceedings of the tenth symposium of the International Society for Tropical Root Crops, held in Salvador, Bahia, Brazil, October 23-29, 1994}, year = {1994}, pages = {1--10}, address = {Salvador, Bahia, Brazil}, note = {RTB; Root and Tuber; Cassava}, }