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Engineering
Air Quality
100%
Ambient air quality
9%
Attainment
9%
Electric Vehicle
100%
Internal Combustion Engine
6%
Internal Combustion Engine Vehicle
9%
Light-Duty Vehicle
6%
Mobile Source
33%
Nitrogen
30%
Particular Matter 2.5
12%
Quality Planning
6%
Quality Standard
15%
Road
12%
Earth and Planetary Sciences
Air Quality
100%
Ambient Air
11%
Emission Reduction
19%
Internal Combustion Engine
19%
Nitrogen Oxide
38%
Ozone
42%
Particular Matter 2.5
15%
Quality Standard
19%
Transportation
7%
Volatile Organic Compound
19%
Social Sciences
Electric Vehicles
100%
Emission Reduction
15%
Greenhouse Gas Emissions
15%
Organic Compound
15%
Sales
9%
Vehicle Fleet
24%