@BOOK {DUGJE:2009a, title = {Farmer's guide to cowpea production in west Africa}, author = {Dugje, I. * and Omoigui, L. and Ekeleme, F. and Kamara, A. and Ajeigbe, H. }, year = {2009}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, isbn = {978-131-332-3}, note = {CRP Grain Legumes; Cowpea; 20p.}, }