Jassem Kadhim, Mothana, and Sameera Ahmed Ebrahiem. “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 April 30, 2025. https://www.jih.uobaghdad.edu.iq/index.php/j/article/view/2815.