The promotion of the welfare and hygiene of maternity and infancy : the administration of the act of Congress of November 23, 1921, fiscal year ended June 30, 1929
U.S. Department of Labor, Children's Bureau
(Bureau publication / U.S. Department of Labor, Children's Bureau, no. 203)
Government Printing Office, 1931
U.S. Department of Labor, Children's Bureau
Government Printing Office