Makundi IN, Nyaki MM, Mohammed NK. Assessment of radioactivity levels in coal and coal ash in Kiwira coal mine using gamma-ray spectrometry. Tanz. J. Sci. [Internet]. 2021 Apr. 18 [cited 2024 Apr. 29];44(3):1-11. Available from: https://tjs.udsm.ac.tz/index.php/tjs/article/view/283