A.Zainuddin, N., W. M.Hafiz, Noor Harliza Abd Razak, and Siti Rohana Mohd Yatim. “Removal of Chemical Oxygen Demand (COD) from Synthetic Rubber Wastewater Via Foam Fractionation (FF) Method”. International Journal of Engineering & Technology 7, no. 4.18 (November 27, 2018): 386–389. Accessed November 25, 2024. https://sciencepubco.com/index.php/ijet/article/view/21975.