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- United States. National Aeronautics and Space Administration16,694
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- United States. Army. Air Corps2,095
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- United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch1,853
- United States. Congress. Joint Committee on Taxation1,834
- United States. Congress. House. Committee on Ways and Means1,648
- United States. Congress. Senate. Committee on Foreign Relations1,528
- United States International Trade Commission1,471
- United States. Bureau of the Census1,452
- Ames Research Center1,444
- United States. Army. Quartermaster Corps1,435