COMPARISON OF AUTO EXHAUST EMISSIONS IN TWO MAJOR CITIES.
D000397:Air Pollution; D002245:Carbon Dioxide; D002947:Cities; D003120:Colorado; D006801:Humans; D006838:Hydrocarbons; D001335:Vehicle Emissions
D006838:Hydrocarbons; D001335:Vehicle Emissions; D002245:Carbon Dioxide
AIR POLLUTION; AUTOMOBILE EXHAUST; CARBON DIOXIDE; COLORADO; HYDROCARBONS