Mining in Colorado: a map of production during the year 1929, compiled from official reports, and a summary statement of the mineral output and resources of the state [ca. 1930].

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Mining in Colorado: a map of production during the year 1929, compiled from official reports, and a summary statement of the mineral output and resources of the state [ca. 1930].

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SNAC Resource ID: 7460703

Boulder Public Library

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Colorado Association

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