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Subjects
- Vehicle Emissions[remove]10
- Military Personnel9
- Motor Vehicles9
- United States9
- World War II9
- Air Pollutants, Occupational8
- Ventilation6
- Weapons5
- Carbon Monoxide Poisoning -- prevention & control2
- Air Pollution -- prevention & control1
- Automobiles1
- California1
- Carbon Monoxide Poisoning1
- Hydrocarbons1
- Particulate Matter -- adverse effects1