UNDERGROUND WATERS (GEOMORPHOLOGY)
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BTSPELEOLOGY (GEOMORPHOLOGY)
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UDC551.444
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Descriptor GERUNTERIRDISCHE GEWÄSSER (GEOMORPHOLOGIE)
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Descriptor ENGUNDERGROUND WATERS (GEOMORPHOLOGY)
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Descriptor FREEAUX SOUTERRAINES (GÉOMORPHOLOGIE)
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NTKARST SPRINGS (GEOMORPHOLOGY)
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NTSUBTERRANEAN RIVERS + SUBTERRANEAN STREAMS (GEOMORPHOLOGY)
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NTSUBTERRANEAN LAKES (GEOMORPHOLOGY)