“INTERPRETASI PERSEBARAN LAPISAN BATUBARA MENGGUNAKAN GEOPHYSICAL LOGGING PENDEKKATAN KRIGING DI PT. X, DAERAH PROVINSI KALIMANTAN TIMUR”. GEOSAINS KUTAI BASIN 2, no. 2 (August 31, 2019). Accessed August 31, 2025. https://jurnal.fmipa.unmul.ac.id/index.php/geofis/article/view/467.