[Technic of environmental conservation. Automobile exhaust].
D000397:Air Pollution; D001334:Automobile Driving; D002248:Carbon Monoxide / Q000032:analysis; D004391:Dust / Q000032:analysis; D009812:Odorants; D009942:Organometallic Compounds / Q000032:analysis; D010578:Petroleum; D001335:Vehicle Emissions / Q000032:analysis*
D004391:Dust; D009942:Organometallic Compounds; D010578:Petroleum; D001335:Vehicle Emissions; D002248:Carbon Monoxide
Bilavgaser.