Zeyad, Zaid, and Yaaroub Faleh Khalf AL-Fatlawy. “Evaluation of Natural Radioactivity in Granite and Marble Used As Flooring Materials in Baghdad Province/ Iraq”. Iraqi Journal of Science 59, no. 3A (July 29, 2018): 1183-1188. Accessed December 1, 2021. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/454.