1974. 2012-04-19T19:59:15Z. 2012-05-03T15:40:24Z. Geological Survey (U.S.). The Survey. English. Public. Kentucky, Gallatin County, Grant County, and Owen County.
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1975. 2012-04-26T19:16:51Z. 2012-05-03T15:42:11Z. Geological Survey (U.S.). The Survey. English. Public. Kentucky, Grant County, and Owen County.