United States. Children's Bureau
, Hunter, Estelle B., 1885-1974
, Hughes, Elizabeth A., 1886-
and Woodbury, Robert Morse, 1889-. Infant Mortality : Results of a Field Study in Gary, Ind., Based on Births in One Year, Bureau Publication No. 112.
Washington, D.C:
Government Printing Office,
1923, https://fraser.stlouisfed.org/title/8394,
accessed on September 11, 2024.