Butiki, George, John Makokha, Fred Masinde, and Conrad Wanyama. “Annual Effective Dose from Radon-222 Concentration Levels in Underground Water in Bungoma South Sub - County, Kenya”. ITEGAM-JETIA 7, no. 28 (April 30, 2021): 78-82. Accessed November 23, 2024. https://itegam-jetia.org/journal/index.php/jetia/article/view/736.