Annual summary of vital statistics--1977.
D001723:Birth Rate; D004194:Disease / Q000145:classification; D004243:Divorce; D005298:Fertility; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D008393:Marriage; D009026:Mortality; D014481:United States; D014798:Vital Statistics; D014944:World Health Organization