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Karyadi R, Setiawan B. Karakteristik Seam Batubara Berdasarkan Analisa Proksimat Pada Formasi Muara Enim di Pit Middle West PT. Bhumi Sriwijaya Perdana Coal, Kabupaten Musi Banyuasin Sumatera Selatan. OPHIOLITE J. Geol. Terap. [Internet]. 2023 Nov. 25 [cited 2026 Oct. 30];5(2):52-61. Available from: https://ophiolite.uho.ac.id/index.php/journal/article/view/9