“Classification of Crude Oils and its Fractions on the Basis of Paraffinic, Naphthenic and Aromatics” (2019) Al-Nahrain Journal of Science, 22(3), pp. 35–42. Available at: https://mail.anjs.edu.iq/index.php/anjs/article/view/2163 (Accessed: 4 December 2024).