“IDENTIFIKASI SEBARAN DAN KETEBALAN LAPISAN BATUBARA BERDASARKAN DATA WELL LOGGING DI PT BORNEO EMAS HITAM LOA TEBU KALIMANTAN TIMUR”. GEOSAINS KUTAI BASIN, vol. 3, no. 2, Aug. 2020, https://doi.org/10.30872/geofisunmul.v3i2.680.