Alghamdi, M. A. M. “Relationship Between Grain Size Distribution and Radon Content in Surficial Sediments of Wadi Arar, Saudi Arabia”. Engineering, Technology & Applied Science Research 8, no. 1 (February 20, 2018): 2447–2451. Accessed January 17, 2022. https://etasr.com/index.php/ETASR/article/view/1698.