L. DT, A. W, T. M, Z. K. Evaluation of Different Varieties of Cowpea (Vigna unguiculata.) in Sudan Savanna of Borno State. theijst [Internet]. 2014 Sep. 30 [cited 2024 Jul. 30];2(9). Available from: http://internationaljournalcorner.com/index.php/theijst/article/view/128187