Salih, Nihad, Tavga Abdalla, and Sundus Ali. “Effect of Waste Engine Oil Contamination on the Geotechnical Properties of Cohesive Soils in Sulaimani City, Iraq”. Association of Arab Universities Journal of Engineering Sciences 27, no. 1 (March 31, 2020): 11-18. Accessed April 19, 2024. https://jaaru.org/index.php/auisseng/article/view/359.