1968. 2012-02-20T19:35:57Z. 2021-09-03T21:32:45Z. Black, Douglas F. B. U.S. Geological Survey. English. Public. Kentucky, Clark County, and Madison County.
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1968. 2012-01-20T20:52:20Z. 2012-03-05T17:35:08Z. Greene, Robert C. The Survey. English. Public. Kentucky, Madison County, and Estill County.
1968. 2012-01-24T16:00:32Z. 2012-01-24T16:00:32Z. Greene, Robert C. U.S. Geological Survey. English. Public. Kentucky, Estill County, and Madison County.