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      Pleistocene Geology of Marathon County, Wisconsin
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  Pleistocene Geology of Marathon County, Wisconsin (version 3) [GIS data]1989 GIS Data: GeMS Level 3 file geodatabase and metadata. Supersedes previous GeMS Level 1 format (DI version 2). 
 
1989
GIS Data: GeMS Level 3 file geodatabase and metadata. Supersedes previous GeMS Level 1 format (DI version 2).