สุดบรรฑิตย์ อ. and ชั่งชัย ณ. (2018) “The paint factory’s wastewater: COD removal by chemical precipitation method”, RMUTSB ACADEMIC JOURNAL. Phra Nakorn Sri Ayutthaya, 6(2), pp. 171–181. Available at: https://li01.tci-thaijo.org/index.php/rmutsb-sci/article/view/149278 (Accessed: 2 May 2024).