1973. 2012-04-10T14:15:01Z. 2012-04-16T15:51:01Z. Johnson, William D., Jr. U.S. Geological Survey. English. Public. Kentucky and Henderson County.
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2. Geologic map of part of the Henderson quadrangle, Henderson County, Kentucky [cartographic material]
1973. 2012-04-09T13:16:57Z. 2012-04-16T15:47:47Z. Johnson, William D., Jr. U.S. Geological Survey. English. Public. Kentucky and Henderson County.