University of Wisconsin–Madisonimages.library.wisc.edu/EcoNatRes/EFacs/WiGeologic... · The Lake...
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University of Wisconsin–Madisonimages.library.wisc.edu/EcoNatRes/EFacs/WiGeologic... · The Lake Superior Region, 10 miles to 1 inch, model 70 by 44 inches, shows topography in