Thitanuwat, Bussarakam, and Manaporn Wongsoonthornchai. “Estimation of Nitrogen Loading to Surface Water from Agriculture Based Area and Its Application for Water Pollution Mitigation: 10.32526/Ennrj/19/2020239”. Environment and Natural Resources Journal 19, no. 3 (April 30, 2021): 230–238. Accessed May 4, 2024. https://ph02.tci-thaijo.org/index.php/ennrj/article/view/242099.