@PROCEEDINGS {EZUMAH:1980d, title = {Soil and water conservation and management for cassava production in Africa}, author = {Ezumah, H. C. and Lal, R. and Okigbo, B. }, booktitle = {Cassava cultural practices: proceedings of a workshop held in Salvador, Bahia, Brazil, 18-21 March}, year = {1980}, pages = {70--74}, note = {RTB; Root and Tuber; Cassava.; pp. 70-74}, }