1978. 2012-06-06T20:12:29Z. 2012-06-13T15:04:58Z. Danilchik, Walter. U.S. Geological Survey. English. Public. Kentucky, Knott County, Breathitt County, and Perry County.
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2. Geologic map of the Wayland quadrangle, Knott and Floyd counties, Kentucky [cartographic material]
1978. 2012-06-13T13:45:44Z. 2012-06-20T14:07:30Z. Hinrichs, E. Neal. U.S. Geological Survey. English. Public. Kentucky, Knott County, and Floyd County.
