Mohammed, A. S., Adamu, A. K., Mu’azu, S., Nafiu, M. I., and Nura, S. 2020. “Effect of Crossability in Improving Some Selected Cowpea (Vigna Unguiculata [L.,] Walp) Varieties”. International Journal of Science for Global Sustainability 6 (2):8. https://doi.org/10.57233/ijsgs.v6i2.108.