Biodiversity Heritage Library
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By "Geological and Natural History Survey (Wis.) "
Geology of Wisconsin. Survey of 1873-1879.
By: Geological and Natural History Survey (Wis.)
Publication info: [Madison, Wis.] :Published under the direction of the chief geologist, by the commissioners of public printing,1877-83.
Contributed by: University of California Libraries (archive.org)