Biodiversity Heritage Library
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By "Wisconsin Geological and Natural History Survey. "
Report of the Superintendent of the Geological Survey, exhibiting the progress of the work, January 1, 1861.
By: Wisconsin Geological and Natural History Survey. - Hall, James,
Publication info: Madison,E.A. Calkins & Co.,1861.
Contributed by: Harvard University, MCZ, Ernst Mayr Library
BHL Collections: Ernst Mayr Library of the MCZ, Harvard University