@INPROCEEDINGS {DIXON:1997a, title = {Introgression of African landraces and arborescent cassava in genetic improvement of cassava in SSA: problems, progress and prospects}, author = {Dixon, A. and Asiedu, R. and Ng, N. Q. }, booktitle = {Paper presented at the regional workshop for the conservation and utlization of cassava, sweetpotato and yam germplasm in sub-Saharan Africa, organized by CIP/IITA/IPGRI in Nairobi, 11-13 November, 1997}, year = {1997}, note = {RTB; Root and Tuber; Cassava}, }