Uosif, M.A.M., and A.M.A. Mostafa. “Assessment of Natural Radioactivity Levels in Soil and Chemical Fertilizers Widely Used in Upper Egypt: Natural Radioactivity in Soil and Chemical Fertilizers”. WAS Science Nature (WASSN) ISSN: 2766-7715 3, no. 1 (May 20, 2020): 1–7. Accessed November 24, 2024. https://worldascience.com/journals/index.php/wassn/article/view/10.