Karkush, M. O., and M. AbdulKareem. “Effects of Residuse Oil Contamination on the Geotechnical Properties of Clay Soil”. Association of Arab Universities Journal of Engineering Sciences 25, no. 5 (January 10, 2019): 243-255. Accessed May 3, 2024. https://jaaru.org/index.php/auisseng/article/view/224.