Fathulliansyah, Noor, Juhrani Juhrani, Irnita Rosaria Santi, and Irfan Hadi. “PERHITUNGAN MUATAN BATUBARA DENGAN METODE DRAFT SURVEY DI PT.TARUNA BETANG LABORATORIUM SERVIS”. Pena Jangkar 6, no. 1 (September 5, 2026): 52–60. Accessed September 19, 2026. http://jurnal.amnus-bjm.ac.id/index.php/pena-jangkar/article/view/235.