“The Effect of Pre-Used Oil of Cars Mixed With Salt Resistance Cement on Collapsibility of Gypseous Soil”. Journal of Engineering and Sustainable Development 13, no. 1 (March 1, 2009): 47–57. Accessed July 22, 2024. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1528.