title: The decline in mortality in Philadelphia from 1870 to 1930: the role of municipal services.
authors.forename: G A
authors.initials: GA
authors.lastname: Condran
authors.forename: H
authors.initials: H
authors.lastname: Williams
authors.forename: R A
authors.initials: RA
authors.lastname: Cheney
mesh_terms: D003140:Communicable Disease Control / Q000266:history*; D003710:Demography; D049711:History, Modern 1601-; D011634:Public Health / Q000266:history*; D013223:Statistics as Topic / Q000266:history*; D014481:United States