Telaah Kritis Peran Provinsi Sumatera Selatan sebagai Wilayah Pengekspor Batu Bara = Critical review of South Sumatera Province role as Coal Exporting Region

The Characteristics of coal and the depositional environment used petrographic, proximate, and ultimate analysis in the mountains of Endut Barat, Banten = Characteristics of coal and the depositional environment using petrographic, proximate, and ultimate analysis in the mountains of Endut Barat, Banten

Tinjauan endapan batubara di daerah Somiangga dan sekitarnya Kabupaten Waropen Papua

Fundamentals of geology

Physical geology