1989. 2002-06-01T04:00:00Z. 2022-12-08T02:20:26Z. Geological Survey (U.S.). U.S. Geological Survey ; For sale by Map Distribution. English. Public. Kentucky and Bell County.
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1987. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). U.S. Geological Survey : [Books and Open-file Reports Section, distributor]. English. Public. Kentucky and Bell County.
1972. 2012-03-28T14:09:09Z. 2012-05-03T15:33:33Z. Geological Survey (U.S.). The Survey. English. Public. Kentucky, Harlan County, and Bell County.