Sinulingga, Shinta Rimvalia, Rico Januar Sitorus, and Imelda G. Purba. “Manajeman Risiko Keselamatan Kerja Kegiatan Pengelasan (Welding) PT. PP. London Sumatra Indonesia Tbk Tirta Agung Palm Oil Mill”. Jurnal Ilmu Kesehatan Masyarakat 3, no. 3 (November 1, 2012). Accessed June 14, 2024. https://ejournal.fkm.unsri.ac.id/index.php/jikm/article/view/114.