TY JOUR TI Assessment of Karst Groundwater Vulnerability to Contamination as a Tool for Delineation of Source Protection Zones: A Case Study in the Crimean Mountains KW karst aquifer KW groundwater KW vulnerability to contamination KW Crimean Mountains KW sanitary protection zone KW assessment KW regional method KW water supply source KW phreatic zone JO Russian Journal of Earth Sciences AU Tokarev, S.V. AU Amelichev, G.N. AU Braga, E.V. AU Sereda, A.I. PY 2024 IS 24 PB Geophysical Center of the Russian Academy of Sciences