title: Northern Virginia life expectancies: a comparison of Fairfax County and Alexandria City (1800-1880).
authors.forename: S D
authors.initials: SD
authors.lastname: Hubbard
mesh_terms: D003710:Demography; D049711:History, Modern 1601-; D012499:Sanitation / Q000266:history*; D013223:Statistics as Topic / Q000266:history*; D014481:United States