Author
Ross, Reuben James, 1918-
Geological Survey (U.S.),
8
Shaw, Frederick C., 1937-
2
Barnes, Harley, 1916-1979,
1
Berry, William B. N.
1
Berry, William B. N.,
1
Dover, James H.
1
Dover, James H.,
1
Friedman, Irving, 1920-2005
1
Friedman, Irving, 1920-2005,
1
Geological Survey (U.S.)
1
Jaanusson, Valdar
1
Jaanusson, Valdar,
1
Kentucky Geological Survey
1
Ruppel, Edward Thompson, 1925-
1
Schleicher, David Glenn,
1