@MANUAL {ASIWE:2005, title = {Growing cowpea commercially in Nigeria: a training manual}, author = {Asiwe, J. A. N. and Adekunle, A. and Fatunbi, A. O. and Chovwen, A. E. }, year = {2005}, note = {Cowpea; Cowpea Agronomy; Learning Material; ISBN: 978-131-261-0; 15p.}, }