@BOOK {NWEKE:1988a, title = {Cropping systems and agronomic performance of improved cassava (Manihoti esculenta Crantz), in a humid forest ecosystem}, author = {Nweke, F. and Ezumah, H. C. and Spencer, D. }, booktitle = {RCMP Research Monograph 2}, year = {1988}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {RTB; Root and Tuber; Cassava}, }