“A Comparative Study of Iraqi Crude Oil Taken from the Nasiriyah Refinery With Various Local and Global Crude Oils”. University of Thi-Qar Journal of Science 6, no. 1 (December 20, 2016): 70–77. Accessed December 26, 2024. http://mail.jsci.utq.edu.iq/index.php/main/article/view/53.