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Ajeigbe, Hakeem A. ,  Mohammed, S.G. ,  Adeosun, J.O. ,  Ihedioha, D. ,  [Farmers guide to increased productivity of improved legume cereal cropping systems in the savannas of Nigeria] ,  Farmers guide to increased productivity of improved legume cereal cropping systems in the savannas of Nigeria

Utoh, N.O. ,  Oyebanji, O.O. ,  Ajeigbe, Hakeem A. ,  [A manual on cowpea seed production] ,  A manual on cowpea seed production