@BOOK {IITA:2009a, title = {R4D Review; 3}, author = {IITA, }, editor = {Lopez, K. and Bramel, P. and Manyong, V. and Asiedu, R. and Chikoye, D. }, year = {2009}, month = {September}, edition = {3}, publisher = {International Institute of Tropical Agriculture (IITA)}, note = {ISSN: 2071-3681}, url = {www.r4dreview.org}, }