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Author
- Geological Survey (U.S.)8
- Jones, M. A. (Myrtle Anne), 1952-5
- Duigon, Mark T.4
- Gillett, Blakeney2
- Gable, Dolores J., 1922-1
- Geological Survey (U.S.), cartographer1
- Hildreth, C. T.1
- Maryland Geological Survey1
- Otton, E. G. (Edmond George), 1918-1
- Schmidt, Paul W.1
- Shamburger, Victor M.1
- Weigle, James M. (James Montgomery), 1919-19941
- Williams, James Frank, 1944-1
