title: Population exposure to toxic substances: use of 1970 census data.
mesh_terms: D000393:Air Pollutants; D002617:Chemical Industry; D003710:Demography; D004781:Environmental Exposure; D004812:Epidemiologic Methods; D011634:Public Health / Q000639:trends; D014116:Toxicology
chemical_list: D000393:Air Pollutants