The decline in mortality in Philadelphia from 1870 to 1930: the role of municipal services.
Condran
G A
GA
Williams
H
H
Cheney
R A
RA
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