title: [Air pollution control in the USA in 1970-1971].
mesh_terms: D000397:Air Pollution / Q000517:prevention & control*; D006077:Government Agencies; D012106:Research; D014481:United States; D014492:United States Public Health Service; D001335:Vehicle Emissions / Q000517:prevention & control
chemical_list: D001335:Vehicle Emissions
vernacular_title: La lutte contre la pollution atmosphérique aux USA en 1970-1971.