Saputra, Isroq Aditya Ekyan, Anshariah Anshariah, and Alam Budiman Thamsi. 2024. “Perbandingan Karakteristik Batubara Daerah Sorong Papua Barat Daya Dan Daerah Kalimantan Selatan”. Journal of Mining Insight 2 (4):111-17. https://doi.org/10.58227/jmi.v2i4.285.