Nophakhun, W., Chapopack, P. and Suksi, U. (2017) “Risk Assessment of Nitrate and Coli Form in Public Drinking Water at Chiangrai Province”, Journal of Health Science of Thailand, 26(2), pp. 262–271. Available at: https://thaidj.org/index.php/JHS/article/view/82 (Accessed: 21December2024).