Gabler, Robert E., author
Essentials of physical geography / Robert E. Gabler
Thomson , 2004
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Newbigin, Marion I.
An introduction to physical geography /Marion I. Newbigin
Dent & sons, Ltd., 1925
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Whittow, John B., author
The Penguin dictionary of physical geography
Allen Lane, 1984
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Strahler, Alan A., author
Introducing to physical geography : environmental update
John Wiley & Sons, 1996
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Moore, W. G., author
A dictionary of geography : definitions and explanations of terms used in physical geography
Penguin Books, 1974
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