title: Survey of lead in the atmosphere of three urban communities: a summary.
mesh_terms: D000397:Air Pollution; D001769:Blood; D002140:California; D006801:Humans; D007854:Lead; D009820:Ohio; D010414:Pennsylvania; D014556:Urine; D001335:Vehicle Emissions
chemical_list: D001335:Vehicle Emissions; D007854:Lead