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Author/Creator
- President's Council on Physical Fitness and Sports (U.S.)83
- United States34
- ebrary, Inc30
- Films for the Humanities & Sciences (Firm)22
- Infobase22
- United States. Department of State, issuing body14
- U.S. Atomic Energy Commission. ANL13
- United States. General Accounting Office13
- United States. Congress. House. Committee on Science, Space, and Technology12
- Geological Survey (U.S.)11
- Project Muse11
- United States, participant in treaty11
- National Institute on Aging, issuing body10
- President's Council on Physical Fitness and Sports (U.S.), issuing body10
- United States. Congress. Senate. Committee on Health, Education, Labor, and Pensions10
- United States. Government Accountability Office9
- American Institute of Physics8
- Brigham, Albert Perry, 1855-19328
- Geological Survey (U.S.), issuing body8
- Infobase, film distributor8