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Supaat Zakaria, Ahmad Nazri A, Dafit Feriyanto, Hadi Pranoto. Efficiency of Conventional Air Purifier and Coconut Shell Activated Carbon Improving Indoor Air Quality . JKTSS [Internet]. 2024 Jun. 25 [cited 2025 Jan. 10];9(1):16-25. Available from: https://jktss.puo.edu.my/jurnalpuo/index.php/jurnal/article/view/8