@INBOOK {NG:1991b, title = {African rice diversity: conservation and prospects for crop improvement}, author = {Ng, N. Q. and Chang, T. T. and Vaughan, D. A. and Zuno-Alto Veros, C. }, year = {1991}, volume = {II}, type = {Crop genetic resources of Africa, Vol. II, edited by N.Q. Ng, P. Perrino, F. Attere, and H. Zedan}, pages = {213--227}, chapter = {3.9}, publisher = {International Institute of Tropical Agriculture (IITA); IBPGR; UNEP; CNR}, address = {Italy; Ibadan, Nigeria}, isbn = {978 131 063 4}, }