Karakteristik Batubara Peringkat Rendah Formasi Bobong dan Implikasinya Terhadap Coal Liquefaction . Jurnal Geomine, [S. l.], v. 8, n. 01, p. 17–24, 2020. DOI: 10.33536/jg.v8i01.1387. Disponível em: https://jurnal.fti.umi.ac.id/index.php/JG/article/view/1387. Acesso em: 28 jun. 2025.