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  1. 1
    Luminous darkness; the wonderful world of caves

    Luminous darkness; the wonderful world of caves by Bögli, Alfred, 1912-, Franke, Herbert W., 1927-2022

    Chicago, Distributed by Rand McNally 1967
    Format: Book


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  2. 2
    Caves of Tennessee

    Caves of Tennessee by Barr, Thomas C., Jr., 1931-2011

    Nashville, Tenn. : State of Tennessee, 1961
    Format: Book


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  3. 3
    The Science of speleology

    The Science of speleology

    London ; New York : Academic Press, 1976
    Format: Book


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