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Subjects
- Military Personnel12
- United States12
- Motor Vehicles10
- World War II10
- Air Pollutants, Occupational7
- Vehicle Emissions5
- Ventilation5
- Weapons5
- Adaptation, Physiological3
- Hot Temperature3
- Dust -- prevention & control1
- Firearms1
- Noise -- adverse effects1
- Particulate Matter -- adverse effects1
- Respiratory Protective Devices1