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Estados Unidos Geological Survey. (19). Geologic sections in T. 56 N., R 33 W. U. S. Geological Survey.
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Estados Unidos Geological Survey. Geologic Sections in T. 56 N., R 33 W. U. S. Geological Survey, 19.
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Estados Unidos Geological Survey. Geologic Sections in T. 56 N., R 33 W. U. S. Geological Survey, 19.
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