IDENTIFIKASI PERSEPSI DAN SIKAP TERHADAP KESELAMATAN KERJA DI PERTAMBANGAN TIMAH INDONESIA. Machine : Jurnal Teknik Mesin, [S. l.], v. 3, n. 1, p. 21–29, 2017. Disponível em: https://journal.ubb.ac.id/index.php/machine/article/view/473. Acesso em: 21 may. 2026.