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Author
- Englund, Kenneth John, 1923-3
- Sable, Edward G. (Edward George), 1924-2
- Adkison, W. L.1
- Cashion, W. B. (William Bryan), 1923-1
- Geological Survey (U.S.)1
- Hosterman, John W. (John Wallace), 1923-1
- Johnston, John E. (John Edward), 1919-1
- Outerbridge, William F.1
- Post, Edwin V. (Edwin Van Horn), 1928-1
- Rice, Charles L.1
