1990. 2009-08-11T17:18:14Z. 2011-03-28T22:43:56Z. Attig, John W. University of Wisconsin-Extension, Geological and Natural History Survey. English. Public. Wisconsin and Sauk County.
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1993. 2009-09-10T12:46:01Z. 2021-05-04T23:20:30Z. Attig, John W. Wisconsin Geological and Natural History Survey, University of Wisconsin-Extension. English. Public. Wisconsin and Taylor County. Pleistocene.
1999. 2009-09-10T15:24:51Z. 2011-03-29T15:22:34Z. Attig, John W. Wisconsin Geological and Natural History Survey, University of Wisconsin-Extension. English. Public. Wisconsin and Oconto County. Quaternary.