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Author/Creator
- National Science Foundation (U.S.)116
- United States. Agricultural Research Service75
- National Institutes of Health (U.S.)70
- United States. Department of State. External Research Staff70
- National Cancer Institute (U.S.)38
- National Institute of Justice (U.S.)38
- National Institute of Neurological and Communicative Disorders and Stroke33
- National Research Council (U.S.)28
- National Science Foundation (U.S.). Division of Science Resources Studies28
- U.S. Fish and Wildlife Service24
- Geological Survey (U.S.)22
- National Academy of Sciences (U.S.)21
- U.S. Atomic Energy Commission. ANL20
- United States. Department of Energy. Office of Energy Efficiency and Renewable Energy20
- United States. National Oceanic and Atmospheric Administration20
- National Research Council Canada19
- U.S. Atomic Energy Commission19
- Argonne National Laboratory16
- Center for Research Libraries (U.S.)16
- National Research Council of Canada16