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- Kentucky Geological Survey✖[remove]7
- Geological Survey (U.S.), issuing body2
- University of Kentucky2
- Englund, Kenneth John, 1923-1
- Gardner, J. H. (James Henry), 1883-19641
- Geological Society of America. Coal Division1
- Geological Survey (U.S.)1
- Heck, W. A.1
- Huddle, John Warfield, 1907-19751
- Johnston, J. E.1
- Kentucky Geological Survey. Reports of progress1
- Kentucky. State Geologist1
- Kosanke, Robert M. (Robert Max)1
- Smith, Gilbert Edwin, 1922-1