title: Seasonal aspects of infant and childhood mortality: Philadelphia, 1865-1920.
authors.forename: R A
authors.initials: RA
authors.lastname: Cheney
mesh_terms: D002669:Child Welfare / Q000266:history*; D003710:Demography; D049711:History, Modern 1601-; D013223:Statistics as Topic / Q000266:history*; D014481:United States