PALEOENVIRONMENT OF BROWN COAL FROM SANGATTA COAL MINES, EAST BORNEO, INDONESIA. Jurnal Teknologi, [S. l.], v. 78, n. 7, 2016. DOI: 10.11113/jt.v78.9166. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/9166.. Acesso em: 23 jul. 2024.