@PROCEEDINGS {EZUMAH:1989, title = {Studies on cassava-based rotation systems in a tropical alfisol}, author = {Ezumah, H. C. and Hulugalle, N. }, booktitle = {Agronomy Abstract 1989 Annual Meetings (15-20 Oct.)}, year = {1989}, note = {RTB; Root and Tuber; Cassava.; pg 53}, }