SIREGAR, Ahmad Marabdi; SIREGAR, Chandra A; UMURANI, Khairul. Utilization and Experimental Use of Stainless Steel Metal Scrap Machinery Waste, St-40 Iron, Copper and Aluminum to Reduce Co, Hc, Co2 Elements in Vehicle Exhaust. Jurnal Pendidikan Vokasi Otomotif, [S. l.], v. 6, n. 2, p. 147–158, 2024. DOI: 10.21831/jpvo.v6i2.73269. Disponível em: https://jurnal.uny.ac.id/index.php/jpvo/article/view/73269. Acesso em: 8 jun. 2025.