title: Natural source of tetraalkyllead in air.
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D004739:England; D009942:Organometallic Compounds / Q000032:analysis*; D012423:Rural Health; D013756:Tetraethyl Lead / Q000031:analogs & derivatives / Q000032:analysis*; D014504:Urban Health
chemical_list: D000393:Air Pollutants; D009942:Organometallic Compounds; D013756:Tetraethyl Lead