United States. Children's Bureau.
Physical Standards for Working Children : Preliminary Report of the Committee Appointed by the Children's Bureau of the U.S. Department of Labor to Formulate Standards of Normal Development and Sound Health for the Use of Physicians in Examining Children Entering Employment and Children at Work, Bureau Publication No. 79 ,
Washington, D.C:
Government Printing Office,
1926, https://fraser.stlouisfed.org/title/8366,
accessed on January 16, 2026.