1966. 2012-01-18T15:41:58Z. 2012-03-05T17:34:16Z. Ulrich, George E. U.S. Geological Survey. English. Public. Kentucky, Trigg County, and Christian County.
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1966. 2012-01-13T15:34:29Z. 2012-03-05T17:32:55Z. Ulrich, George E. U.S. Geological Survey. English. Public. Kentucky and Christian County.
1966. 2012-01-17T16:19:30Z. 2022-07-15T21:37:18Z. Kehn, Thomas M. U.S. Geological Survey. English. Public. Kentucky, Caldwell County, and Christian County.
1966. 2012-01-09T20:58:32Z. 2012-03-05T17:31:26Z. Klemic, Harry, 1920-. U.S. Geological Survey. English. Public. Kentucky, Todd County, Christian County, Tennessee, and Montgomery County.
1966. 2012-01-17T16:07:32Z. 2021-10-01T21:33:19Z. Klemic, Harry, 1920-. U.S. Geological Survey. English. Public. Kentucky, Christian County, Tennessee, and Montgomery County.
1966. 2012-01-13T21:10:45Z. 2012-01-13T21:10:45Z. Klemic, Harry, 1920-. U.S. Geological Survey. English. Public. Kentucky, Christian County, Tennessee, and Montgomery County.
