Rahmad B. Pembentukan Silicified Wood (Silicified Coal) di Lapisan Batubara Seam-1 dan Dampak Operasional Penambangan, Daerah Muara Wahau, Kab. Kutai Timur, Kalimantan Timur. Prosiding Seminar Nasional ReTII [Internet]. 2021Nov.9 [cited 2024Apr.25];:535 -543. Available from: //journal.itny.ac.id/index.php/ReTII/article/view/2737