@PROCEEDINGS {KANG:1980l, title = {Studies on potential uses of crop residues and some industrial by-products in soil management in the humid tropics}, author = {Kang, B. T. and Okigbo, B. and Lal, R. and Akobundu, O. A. and Caveness, F. E. }, booktitle = {AAASA, ILCA Conference in Appropriate Technology of Agriculture in Africa, Douala, Cameroon, 17-21 November}, year = {1980}, }