Manda, J.Alene, A.Hirpa Tufa, A.Abdoulaye, TahirouKamara, A.Olufajo, O.Boukar, O.Manyong, Victor M.2019-05-212019-05-21https://hdl.handle.net/10568/101319Adoption and ex-post impacts of improved cowpea varieties on productivity and net returns in Nigeria