National Center for Health Statistics (U.S.). Division of Vital Statistics.
Demographic characteristics of persons married between January 1955 and June 1958, United States ..
Infant mortality trends, United States and each State, 1930-1964
Marriage and divorce
Medical X-ray visits and examinations during pregnancy, United States, 1963
Report of the panel to evaluate U.S. standard certificates and reports
State definitions of live births, fetal deaths, and gestation periods at which fetal deaths are registered
The 1968 revision of the standard certificates