1968. 2012-01-31T19:09:11Z. 2012-03-05T17:37:55Z. Outerbridge, William F. U.S. Geological Survey. English. Public. Kentucky, Magoffin County, and Floyd County.
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2. Geologic map of the McDowell quadrangle, Floyd and Pike Counties, Kentucky [cartographic material]
1968. 2012-02-15T19:12:19Z. 2012-03-05T17:41:15Z. Rice, Charles L. U.S. Geological Survey. English. Public. Kentucky, Floyd County, and Pike County.