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Rosli MA, Daud Z, Awang H, Ab Aziz NA, Ridzuan MB, Abubakar MH, Adnan MS, Tajarudin HA. Adsorption Efficiency and Isotherms of COD and Color Using Limestone and Zeolite Adsorbents. ijie [Internet]. 2018Dec.29 [cited 2020Apr.1];10(8). Available from: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/2358