Ngbede, Samson O., U. N. Onyegbule, H. N. Ibekwe, O. A. Uwalaka, and S. C. Okpara. “Economic Anaylsis of Okra (Abelmoschus Esculentus L. Moench) Production under Different Rates of Organic Manure in Okigwe, Southern Nigeria”. Asian Journal of Agriculture and Food Sciences 2, no. 2 (April 12, 2014). Accessed October 27, 2021. https://ajouronline.com/index.php/AJAFS/article/view/1014.