Ahmed, Omer, Safa H. Abid Awn, and Raquim N. Zehawi. “Improving California Bearing Ratio (CBR) Using Chemical and Physical Treatments for Diyala Soils”. Diyala Journal of Engineering Sciences 14, no. 2 (June 16, 2021): 42–51. Accessed September 19, 2024. https://djes.info/index.php/djes/article/view/792.