Monchan Maketon, and Sumalee Phewporchai. “Water Qualities of Wastewater in Kesetsart University”. Agriculture and Natural Resources 28, no. 4 (December 31, 1994): 593–601. Accessed May 5, 2024. https://li01.tci-thaijo.org/index.php/anres/article/view/241469.