Perhitungan Cadangan Batupasir di Derah Perencanaan Tambang Desa Pegongsoran, Kecamatan Pemalang, Kabupaten Pemalang, Jawa Tengah: Calculation of Sandstone Reserves in the Mine Planning Area Pegongsoran Village, Pemalang District, Pemalang Regency, Central Java. mineral [Internet]. 2021 Apr. 1 [cited 2026 Jun. 5];6(1):1-5. Available from: https://journal.ubb.ac.id/index.php/mineral/article/view/3078