Subject
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Diesel fuels
2
Diesel fuels Environmental aspects
4
Diesel fuels Standards
2
Diesel motor Air filters
1
Diesel motor exhaust gas
3
Diesel motor exhaust gas Analysis
1
Diesel motor exhaust gas Environmental aspects
2
Diesel motor exhaust gas Forecasting Computer programs
1
Diesel motor exhaust gas Government policy
1
Diesel motor exhaust gas Measurement
2
Diesel motor exhaust gas Standards
5
Electric automobiles Fuel consumption
2
Electric vehicles Fuel consumption
2
Electronic data interchange
3
Energy conservation Government policy
1
Energy consumption
2
Energy consumption Research
1
Energy policy
1
Energy policy Law and legislation
2
Engines Environmental aspects Standards
1
Engines Maintenance and repair Standards
1
Ethanol as fuel
2
Forms management
4
Fuel Standards
2
Fuel cell vehicles Fuel consumption Standards
1
Fuel cell vehicles Testing
1
Fuel pumps
1
Fuel pumps Labeling
1
Gasoline
2
Gasoline Additives Environmental aspects
2
Gasoline Standards
6
Gasoline Taxation
1
Gasoline industry Law and legislation
1
Gasoline industry Standards
2
Gasoline pipelines Standards
1
Gasoline vapor control Law and legislation
1
Gasoline vapor control Standards
1
Green technology
3
Greenhouse gas mitigation
8
Greenhouse gas mitigation Computer programs
1
Greenhouse gas mitigation Government policy
1
Greenhouse gas mitigation Standards
6
Greenhouse gases
4
Greenhouse gases Standards
2
Hazardous substances Law and legislation
5
Hybrid electric cars Fuel consumption
2
Hybrid electric vehicles
2
Hybrid electric vehicles Fuel consumption
2
Law and legislation
1
Lead Environmental aspects
1
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