Buch(gedruckt)#11923Child labor and the work of mothers in the beet fields of Colorado and MichiganIn: Bureau publication no. 115Matthews, Ellen Nathalie; Light, Gertrude Underhill; @United States / Children's BureauMatthews, Ellen Nathalie; Light, Gertrude Underhill; @United States / Children's BureauBestellen über Verfügbarkeit