title: Proceedings: Air pollution standards: an overview.
mesh_terms: D000393:Air Pollutants / Q000633:toxicity; D000397:Air Pollution; D000818:Animals; D004391:Dust; D004781:Environmental Exposure; D006801:Humans; D006838:Hydrocarbons; D010944:Plants / Q000187:drug effects; D011786:Quality Control; D012926:Social Control, Formal; D013997:Time Factors; D014481:United States; D001335:Vehicle Emissions; D014887:Weather
chemical_list: D000393:Air Pollutants; D004391:Dust; D006838:Hydrocarbons; D001335:Vehicle Emissions