@INBOOK {EBERHART:1991a, title = {A comprehensive breeding system for maize improvement in Africa}, author = {Eberhart, S. A. and Kim, S. K. and Mareck, J. and Darrah, L. and Goodman, M. }, 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 = {175--193}, chapter = {3.6}, publisher = {International Institute of Tropical Agriculture (IITA); IBPGR; UNEP; CNR}, address = {Italy}, isbn = {978 131 0634}, }