Depths of the earth: caves and cavers of the United States
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Bibliographic Details
Main Author: Halliday, William R. 1926- (Author)
Format: Book
Language:English
Published: New York Harper & Row 1976
Edition:Rev. and enlarged ed.
Subjects:
Physical Description:XV, 432 S. zahlr. Ill., graph. Darst.
ISBN:0060117486

There is no print copy available.

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