@ARTICLE {HAHN:1979, title = {Cassava improvement in Africa}, author = {Hahn, S. K. and Terry, E. R. and Leuschner, K. and Akobundu, I. and Okali, C. and Lal, R. }, journal = {Field Crops Research}, year = {1979}, volume = {2}, number = {3}, pages = {193--226}, issn = {0378-4290}, note = {RTB; Root and Tuber; Cassava}, }