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Estados Unidos Geological Survey. (19). Geologic sections in T. 50 N., RS. 38 and 39 W. and T. 51 N., R. 38 W. U. S. Geological Survey.
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Dyfyniad Arddull Chicago
Estados Unidos Geological Survey. Geologic Sections in T. 50 N., RS. 38 and 39 W. and T. 51 N., R. 38 W. U. S. Geological Survey, 19.
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Estados Unidos Geological Survey. Geologic Sections in T. 50 N., RS. 38 and 39 W. and T. 51 N., R. 38 W. U. S. Geological Survey, 19.
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