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Author
- Dixon, H. Roberta6
- Colton, Roger B. (Roger Burnham), 1924-5
- Geological Survey (U.S.)4
- Harwood, David S.4
- Feininger, Tomas3
- Langer, William H.3
- Peper, John D.3
- Pessl, Fred3
- Schnabel, Robert W.3
- Fritts, Crawford E. (Crawford Ellsworth), 1927-2
- Goldsmith, Richard, 1918-2
- Moore, George E.2
- O'Leary, Dennis W.2
- Randall, Allan D., 1932-2
- Simpson, Howard E.2
- Stone, Byron D.2
- Emerson, Benjamin Kendall, 1843-1
- Gates, Robert Maynard, 1918-1
- Hildreth, Carol T.1
- Malde, Harold E. (Harold Edwin), 1923-1
