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Author
- Geological Survey (U.S.)8
- Thaden, Robert E., 1924-2
- Campbell, Marius R. (Marius Robinson), 1858-19401
- Hatch, Norman L.1
- Lewis, Richard Quintin, 1919-1
- Maxwell, Charles H. (Charles Henry), 1923-1
- Mayfield, S. M.1
- Puffett, Willard P. (Willard Penry), 1922-1
- Schlanger, Seymour O. (Seymour Oscar), 1927-1
- Stager, Harold Keith, 1921-1
- Taylor, Alfred R.1
- Weir, Gordon W. (Gordon Whitney), 1922-20111
