Israilov M. “REGARDING NATURAL AND ARTIFICIAL RADIOACTIVE BACKGROUND”. INTERNATIONAL JOURNAL OF SOCIAL SCIENCE & INTERDISCIPLINARY RESEARCH ISSN: 2277-3630 Impact Factor: 8.036, vol. 12, no. 11, Nov. 2023, pp. 186-9, https://gejournal.net/index.php/IJSSIR/article/view/2131.