Issue Title
Vol 21, No 1 (2023): February The Effect of Adding Aluminum Scrap to Motor Vehicle Mufflers to Reduce the Danger of Exhaust Emissions Abstract  PDF
Ahmad Marabdi Siregar, Chandra Amirsyahputra Siregar, Khairul Umurani, Mulyadi Mulyadi, Tony Siagian, ML Teguh Samudra, Aufa Afika
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