00458nam a2200157Ia 450000500170000000800460001703700120006304000210007504100130009608400240010910000190013324500540015226000600020630000150026665000190028120250508151137.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDL bengcFEDL  aeng2eng  a016.0014, JUDqFEDL  aJudd Charles H 0aResearch in the United States office of education  aWashington, USAbU.S. Government Printing Office c1939  aviii,133p.  aBibliographies