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
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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
