.Al-Ibrahim R .N, K. Al-Ameri T. Crude Oil Analyses of the Yamama Formation in the Subbah, Ratawi, Tuba and Luhis Oil Fields, Southern Iraq. Iraqi Journal of Science. 2023;56(2B):1425-1437. Accessed December 9, 2025. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/10118