“SISTEM PREVENTIVE MAINTENANCE CONTROL PADA MESIN BUBUT BJ-1640GD (Studi Kasus Di Laboratorium Teknik Mesin Fakultas Teknik Universitas Bangka Belitung)”. 2021. PROCEEDINGS OF NATIONAL COLLOQUIUM RESEARCH AND COMMUNITY SERVICE 4 (January). https://doi.org/10.33019/snppm.v4i0.2156.