Effect of Sandstone Compressive Strength Value on Differences in Physical Conditions in Samarinda City, East Kalimantan Province: SANDSTONE UCS. PROMINE [Internet]. 2023 Jun. 22 [cited 2026 Jun. 17];10(1):22-9. Available from: https://journal.ubb.ac.id/index.php/promine/article/view/3273