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Estados Unidos Geological Survey. (19). Geologic sections of Quincy mine, T. 55 N., R. 34 W., Houghton County, Mich. U. S. Geological Survey.
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Dyfyniad Arddull Chicago
Estados Unidos Geological Survey. Geologic Sections of Quincy Mine, T. 55 N., R. 34 W., Houghton County, Mich. U. S. Geological Survey, 19.
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Dyfyniad MLA
Estados Unidos Geological Survey. Geologic Sections of Quincy Mine, T. 55 N., R. 34 W., Houghton County, Mich. U. S. Geological Survey, 19.
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