@INBOOK {NG:1991a, title = {The genetic resources activities of the International Institute of Tropical Agriculture}, 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}, pages = {27--33}, publisher = {International Institute of Tropical Agriculture (IITA); IBPGRI; UNEP; CNR}, address = {Italy; Ibadan, Nigeria}, }