PATANDIANAN, E. A. . COAL QUALITY REVIEW SURVEY, SORONG REGENCY, WEST PAPUA PROVINCE: SURVEY TINJAU KUALITAS BATUBARA KABUPATEN SORONG PROVINSI PAPUA BARAT. INTAN Jurnal Penelitian Tambang, [S. l.], v. 2, n. 1, p. 27–35, 2022. DOI: 10.56139/intan.v2i1.18. Disponível em: http://jurnal-intan.ac.id/index.php/intan/article/view/18. Acesso em: 17 apr. 2026.