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Subjects
- Military Personnel[remove]7
- United States7
- Aircraft3
- Equipment Design2
- Telescopes2
- World War II2
- Body Constitution1
- Body Weights and Measures1
- Equipment and Supplies1
- Equipment and Supplies -- standards1
- Fixation, Ocular -- physiology1
- Oxygen Consumption -- physiology1
- Ventilators, Mechanical1
- Vision Tests1
- Weapons1