Nadhim A. Abdullah, Mohammed A. Jaber, and Hamed A. Hamdi. “The Investigation of the Effect of Polypropylene Waste on the Compressive Strength of Iraqi Portland Cement (UM-Qasir)”. Zeta Repository 18 (May 25, 2023): 59–64. Accessed April 7, 2025. https://zetarepo.com/index.php/zr/article/view/1870.