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Depths of the earth : caves and cavers of the United States /

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Bibliographic Details
Main Author: Halliday, William R., 1926-
Format: Book
Language:English
Published: New York : Harper & Row, [1976]
Edition:Rev. and enl. ed.
Subjects:
Caves > United States.
Speleology.
Description
Item Description:Includes index.
Physical Description:xv, 432 pages : illustrations ; 24 cm.
Bibliography:Bibliography: pages 409-415.
ISBN:0060117486 :