Thuwakham, Nutwarin, Samuch Taweekasemsombut, and Sawitree Kathongthung. 2023. “The Quantity of Heavy Metals in Wastewater from Wire Electrical Discharge Machining”. KKU Science Journal 51 (1):57-68. https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/251673.