Ali T. Mukhalif, Ali K. Al- Muttarri, Mahammed E. J. Al-Defiery, Ahmed A. Kahewish. “Measurement of Natural Radioactivity Levels in the Soils of Some Universities Campus of Babylon”. Mesopotamia Environmental Journal (mesop. Environ. J) ISSN: 2410-2598, vol. 4, no. 2, Feb. 2022, pp. 8-22, https://mej.uobabylon.edu.iq/index.php/mej/article/view/54.