Geology of the Aspen Mining District Colorado / by Josiah Edward Spurr ; Samuel Franklin Emmons, geologist in Charge

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Bibliographic Details
Superior document:Monographs of the United States Geological Surve 31
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Place / Publishing House:Washington, DC : Gov. Print. Off.
Language:English
Series:Monographs of the United States Geological Surve 31
Contents/pieces:1 records
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