Matsitsi, S. M., J. M. Linturi, J.M. Kebwaro, and O. M. Maweu. “Effects of Seasonal Change on the Levels of Geogenic Radionuclides in Sand and Rocks from Tyaa River Deposit in Kitui County: Geophysics”. International Journal of Fundamental Physical Sciences 9, no. 1 (March 31, 2019): 14-19. Accessed April 23, 2024. https://fundamentaljournals.org/index.php/ijfps/article/view/35.