Nafea Arbilei M, Mohammed Hamed J. EVALUATION OF X-RAY RADIATION SHIELDING OF CONCRETE WITH TWO POLYMERIC ADDITIVES. J. eng. sustain. dev. 2019;23(6):101-108. Accessed June 5, 2026. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/185