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Report on the Geology and Topography of a Portion of the Lake Superior Land District in the State of Michigan. By J.W. Foster and J.D. Whitney. (May 16, 1850.).

United States. General Land Office

出版	1850
URL	http://books.google.com.hk/books?id=ho_jkQEACAAJ&hl=&source=gbs_api