A. Najim L, M. Hassan I. Studying the Linear and the Mass Attenuation Coefficient of Gamma Rays for Certain Building Materials used in Iraq. RSCI [Internet]. 2014 Oct. 1 [cited 2025 Sep. 15];25(5):75-8. Available from: https://ojs.uomosul.edu.iq/index.php/rsci/article/view/47700