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Mohd Zubir MZI, Wan Abdul Rahman WMW. Alternative Soundproof Material to Reduce Noise HVAC Round Duct System (Rockwool and Bamboo Fiber). peat [Internet]. 2021 Jun. 22 [cited 2026 Aug. 15];2(1):683-9. Available from: https://periodical.uthm.edu.my/index.php/peat/article/view/722