@BOOKLET {MANYONG:2000c, title = {Impact of IITA-improved germplasm on maize production in west and central Africa}, author = {Manyong, V. and Kling, J. and Makinde, K. and Ajala, S. and Menkir, A. }, year = {2000}, address = {Ibadan, Nigeria}, howpublished = {Impact series}, note = {13p.; Impact series; CRP Maize; Maize}, }