“Studi Benefisiasi Grafit Asal Kalimantan Barat Menggunakan Metode Flotasi ”. Jurnal Geomine 13, no. 01 (June 26, 2026): 1–7. Accessed August 22, 2026. https://jurnal.fti.umi.ac.id/index.php/JG/article/view/1264.