Bùi, Đông 2025. THE GEOHERITAGE VALUES OF BAN BU CAVES SYSTEM, NGOC LAC, THANH HOA IN TOURISM DEVELOPMENT. VNUHCM Journal of Natural Sciences. 7, S1 (Apr. 2025), In press. DOI:https://doi.org/https://doi.org/10.32508/stdjns.v7iS1.1375.