HAMMA, I. L, U. IBRAHIM, and S. M. YUSUF. “GROWTH AND YIELD OF OKRA AS INFLUENCED BY LIVE MULCH IN SAMARU, ZARIA”. European Journal of Sustainable Development 1, no. 2 (June 1, 2012): 229. Accessed November 22, 2024. http://ojs.ecsdev.org/index.php/ejsd/article/view/15.