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Subjects
- United States[remove]115
- World War II61
- Military Personnel46
- Motor Vehicles21
- Air Pollutants, Occupational10
- Hot Temperature9
- Ventilation9
- Military Medicine8
- Weapons8
- Adaptation, Physiological6
- Equipment and Supplies6
- Military Medicine -- instrumentation6
- Military Science6
- San Francisco6
- Civil Defense5
- Gas Poisoning -- prevention & control5
- Vehicle Emissions5
- Chemical Warfare4
- Civil Defense -- education4
- Military Hygiene4