Rahmad, B. (2021) “Pembentukan Silicified Wood (Silicified Coal) di Lapisan Batubara Seam-1 dan Dampak Operasional Penambangan, Daerah Muara Wahau, Kab. Kutai Timur, Kalimantan Timur”, ReTII, pp. 535 - 543. Available at: //journal.itny.ac.id/index.php/ReTII/article/view/2737 (Accessed: 26April2024).