Okonkwo E. M., Okonkwo E. M. “Optimization of Biodiesel Production: Transesterification of Edible and Non-Edible Vegetable Oils : Transesterification of Edible and Non-Edible Vegetable Oils ”. Journal of Energy Policy Research and Development (JEPRD) 1, no. 1 (March 1, 2011): 119-129. Accessed November 23, 2024. https://jeprd.energy.gov.ng/jeprd/index.php/journal/article/view/16.