KARAKTERISASI KANDUNGAN MINERAL PADA SISA HASIL PENGOLAHAN TB PRIMER BATU BESI PT TIMAH Tbk. PROCEEDINGS OF NATIONAL COLLOQUIUM RESEARCH AND COMMUNITY SERVICE, [S. l.], v. 9, p. 7–11, 2025. DOI: 10.33019/h4tag122. Disponível em: https://www.journal.ubb.ac.id/index.php/snppm/article/view/7317. Acesso em: 11 jun. 2026.