@INBOOK {SINGH:2002d,
title = {Improving cowpea-cereals-based cropping systems in the dry savannas of West Africa},
author = {Singh, B. and Ajeigbe, H. },
year = {2002},
type = {Challenges and opportunities for enhancing sustainable cowpea production:},
pages = {278--286},
note = {Proceedings of the World Cowpea Conference III held at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 4-8 September 2000},
}