@INPROCEEDINGS {KAMARA:2012b, title = {Improving the productivity of cowpea in the savannas of northeast Nigeria through participatory evaluation and dissemination of improved varieties}, author = {Kamara, A. and Omoigui, L. * and Ewansiha, S. U. }, editor = {Boukar, O. and Coulibaly, O. and Fatokun, C. and Lopez, K. and Tamo, M. }, booktitle = {Innovative research along the cowpea value chain. Proceedings of the Fifth World Cowpea Conference on Improving livelihoods in the cowpea value chain through advancement in science, held in Saly, Senegal, 27 September - 1 October 2010}, year = {2012}, pages = {202--211}, organization = {International Institute of Tropical Agriculture (IITA)}, location = {Ibadan}, isbn = {978-978-8444-07-7}, note = {ISBN: 978-978-8444-07-7}, }