@MANUAL {ISHIKAWA:2013d, title = {Cowpea field guide for Burkina Faso (This is the english of the Dioula title published 2015)}, author = {Ishikawa, H. and Drabo, I. * and Muranaka, S. and Boukar, O. }, year = {2013}, organization = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria.}, note = {The manual in Dioula is published in 2015.WAHub; CRP Grain Legumes; Cowpea; Cowpea Agronomy; Learning Material; ISBN: 978-978-8444-62-6; 30p.}, }