1.
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Lexington : Kentucky Geological Survey, 1955.
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2.
|
Lexington : Kentucky Geological Survey, 1957.
|
3.
|
Lexington : Kentucky Geological Survey, 1954.
|
4.
|
Lexington : Kentucky Geological Survey, 1950.
|
5.
|
Lexington : Kentucky Geological Survey, 1956.
|
6.
|
Lexington : Kentucky Geological Survey, 1955.
|
7.
|
Lexington : Kentucky Geological Survey, 1953.
|
8.
|
Lexington : Kentucky Geological Survey, 1952.
|
9.
|
Lexington : Kentucky Geological Survey, 1951.
|
10.
|
Lexington : Kentucky Geological Survey, 1958.
|