Andrew, Osivmete Victor.,Egbucha, Kelechukwu Chris., Omosun, Garuba., Akanwa, Franklin Eberechi and Akpanudo, Samuel Innocent. Effect of X-Ray Irradiation on the Growth and Yield Parameters of Four Cowpea (Vigna Unguiculata (L.) Walp) Genotypes. JSTR 2021, 3.