Salih Abbas, Ammar, and Toleen Salah Othman. “Production and Evaluation of Biodiesel from Sheep Fats Waste”. Iraqi Journal of Chemical and Petroleum Engineering 13, no. 1 (March 30, 2012): 11–18. Accessed May 19, 2024. https://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/329.