@INBOOK {NG:1992, title = {Wide crosses of Vigna food legumes}, author = {Ng, N. Q. }, editor = {Thottappilly, G. and Monti, L. M. and Mohan-Raj, D. R. and Moore, A. W. }, year = {1992}, type = {Biotechnology: enhancing reseach on tropical crops in Africa}, pages = {75--80}, publisher = {CTA; International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, }