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Author
- Geological Survey (U.S.)65
- Price, Don, 1929-10
- Witkind, Irving Jerome, 1917-6
- Nelson, W. John5
- Bayley, Richard W. (Richard William), 1919-4
- Chute, Newton E. (Newton Earl), 1907-19874
- McGrew, Laura W. (Laura Wenger), 1921-4
- Moore, Samuel L.4
- Brabb, Earl E., 1929-3
- Drewes, Harald, 1927-3
- Hansen, Wallace R., 1920-3
- Kepferle, Roy Clark, 1926-3
- Moench, Robert Hadley, 1926-3
- Mudge, Melville Rhodes, 1921-3
- Richter, Donald H.3
- Seiders, Victor M.3
- Smith, Avery E.3
- Snyder, George L. (George Leonard), 1927-3
- Soister, Paul E.3
- Swadley, W. C.3
