Impact of IITA-improved germplasm on maize production in West and Ce ntral Africa / V.M. Manyong..[et al] - Ibadan, Nigeria : International Institute of Tropical Agriculture , 2000. - 11 p. : figs. ; 25 cm. ISBN: 97813118X Subjects--Topical Terms: Corn -- Germplasm resources -- Africa, West. Corn -- Germplasm resources -- Africa, Central.