UMAM, R.; SUHARNO, S.; JUNAIDI, R. Geochemical Evidence from Major and Trace Elements in Geothermal Waters of Empat Lawang, Southern Sumatra: Clues to Mineralization and Hydrothermal Sources. Leuser Journal of Environmental Studies, [S. l.], v. 3, n. 2, p. 87–98, 2025. DOI: 10.60084/ljes.v3i2.343. Disponível em: https://heca-analitika.com/ljes/article/view/343. Acesso em: 10 nov. 2025.