01205cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035002000092040001900112050002400131060002700155110003900182245008800221260004300309300002300352490003200375500011900407500028600526700003700812700003800849810006400887l  23000069 DLC20260227111529.0820626s1923    xx f          000 0 eng    al  23000069   a(OCoLC)14811473  aDLCcDNLMdDLC00aHD6250.U4bC62 19230 aW1bUN6181 no.115 19231 aUnited States.bChildren's Bureau.10aChild labor and the work of mothers in the beet fields of Colorado and Michigan ...  aWashington,bGovt. print. off.,c1923.  av, 122 p.bplates.1 aBureau publicationvno. 115  aAt head of title: U. S. Department of labor.  James J. Davis, secretary.  Children's bureau.  Grace Abbott, chief.  a"The investigation was planned and carried on under the direction of Ellen Nathalie Matthews ... Dr. Gertrude A. [sic] Light made physical examinations of children in the Colorado beet-field region and analyzed the findings with reference to health." - Letter of transmittal, p. v.1 aMatthews, Ellen Nathalie,d1884-1 aLight, Gertrude Underhill,d1871-1 aUnited States.bChildren's Bureau.tPublication ;vno. 115.