@BOOKLET {ONYIBE:2006a, title = {Guide to maize production in Borno State, Nigeria: promoting sustainable agriculture in Borno State (PROSAB)}, author = {Onyibe, J. E. * and Kamara, A. and Omoigui, L. }, year = {2006}, address = {Ibadan, Nigeria}, note = {ISBN: 978 131 296 3; 20p. CRP Maize; IITA-PROSAB extension guides;}, }