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- Geological Survey (U.S.)38
- National Research Council (U.S.)11
- United States. National Bureau of Standards11
- BioOne (Organization), distributor9
- National Research Council (U.S.). Research Information Service9
- Anserova, N. M.7
- United States7
- Walker, Ernest P. (Ernest Pillsbury), 1891-19697
- West, Clarence J. (Clarence Jay), 1886-19537
- Ambrose, David, 1939-6
- Cushman, Joseph A. (Joseph Augustine), 1881-19496
- Hull, Callie6
- Kuzʹmenko, R. I.6
- Paradiso, John L.6
- U.S. Atomic Energy Commission6
- Geological Survey of Canada5
- Iglesias, Dolores5
- MacPhail, Ian, 1923-5
- Morton Arboretum5
- National Institute of Standards and Technology (U.S.)5