@INBOOK {N. Q. Ng:1991, title = {The genetic resources activities of the international institute of Tropical agriculture (IITA)}, author = {Ng, N. Q. }, year = {1991}, type = {Crop genetic resources of Africa, Vol. II, edited by N.Q Ng, P. Perrino, F. Attere, and H. Zedan}, number = {II}, pages = {27--33}, chapter = {1.2}, publisher = {International Institute of Tropical Agriculture (IITA); IBPGR; UNEP; CNR}, address = {Italy}, isbn = {978 131 0634}, }