Manurung, Vuko A T, and Erwin Setiawan. “MENINGKATKAN EFISIENSI ANGGARAN MAINTENANCE DI PT UNITED TRACTORS AREA FMC SIMS SITE BATUKAJANG–KALTIM STUDI KASUS SARINGAN UDARA (AIR FILTER)”. Technologic 8, no. 2 (March 12, 2018). Accessed November 22, 2024. https://technologic.polytechnic.astra.ac.id/index.php/firstjournal/article/view/213.