Saputra IAE, Anshariah A, Thamsi AB. Perbandingan Karakteristik Batubara Daerah Sorong Papua Barat Daya Dan Daerah Kalimantan Selatan. JMI [Internet]. 2024 Oct. 30 [cited 2025 Oct. 13];2(4):111-7. Available from: https://ejournal.insightpublisher.com/index.php/JMI/article/view/285