Sinulingga SR, Sitorus RJ, Purba IG. Manajeman Risiko Keselamatan Kerja Kegiatan Pengelasan (Welding) PT. PP. London Sumatra Indonesia Tbk Tirta Agung Palm Oil Mill. JIKM [Internet]. 2012 Nov. 1 [cited 2024 Nov. 21];3(3). Available from: https://ejournal.fkm.unsri.ac.id/index.php/jikm/article/view/114