title: Vehicle emissions: progress and challenges.
authors.affiliation: Department of Mechanical Engineering and Energy and Resources Group, University of California, Berkeley, USA. sawyer@berkeley.edu
authors.forename: Robert F
authors.initials: RF
authors.lastname: Sawyer
mesh_terms: D000393:Air Pollutants / Q000009:adverse effects / Q000592:standards; D000397:Air Pollution / Q000009:adverse effects / Q000517:prevention & control*; D004781:Environmental Exposure / Q000009:adverse effects / Q000517:prevention & control* / Q000592:standards; D006801:Humans; D018570:Risk Assessment; D014481:United States; D001335:Vehicle Emissions / Q000517:prevention & control* / Q000633:toxicity
chemical_list: D000393:Air Pollutants; D001335:Vehicle Emissions