“Measuring the Concentration of Radon Gas in Book Stores in Primary Schools in Diyala Governorate”. Ibn AL-Haitham Journal For Pure and Applied Sciences 35, no. 3 (July 20, 2022): 56–64. Accessed May 8, 2024. https://jih.uobaghdad.edu.iq/index.php/j/article/view/2815.