POTENSI LOGAM TANAH JARANG DI DALAM ABU BATUBARA: POTENTIAL OF RARE EARTH METALS IN COAL ASH. MINERAL, [S. l.], v. 8, n. 2, p. 1–7, 2023. DOI: 10.33019/mineral.v8i2.4364. Disponível em: https://journal.ubb.ac.id/index.php/mineral/article/view/4364. Acesso em: 4 jun. 2026.