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Devananda, Avellyn Shinthya Sari, Yazid Fanani, Nazario Gomez. Comparison Of Quarry Resource Estimation Using Cross Section And Contour Methods At PT. X, East Java, Indonesia. Joecy Journal [Internet]. 2025 Jun. 29 [cited 2026 Oct. 18];5(2):9833-5. Available from: https://joecy.org/index.php/joecy/article/view/1279