Lee, S.-H. (2015) “Effect of Fine Sand Size in a Decentralized Household Drinking Water Purification Svstem”, Science & Technology Asia, 11(3), pp. 45–53. Available at: https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41543 (Accessed: 26 April 2024).