00686nam a2200181Ia 450000100060000000300050000600500170001100800410002803500200006904000130008911000600010224501200016226000970028230000180037950400370039765000320043465000380046685946BIBL20160527203841.0870622s1948    nyu      b    000 0 eng d  a(OCoLC)16014909  aCLUcCLU10aNew York (N.Y.). Division of Elementary Schools.2Local10aChanging concepts and practices in elementary educationcPrepared at the direction of the Board of Superintendents.0 aBrooklynbDivision of Elementary Schools, Board of Education of the City of New Yorkc[1948]  a46 p.c24 cm.  a"A helpful bibliography": p. 36. 0aChildrenxEducation.2Local 0aEducationzNew York (N.Y.)2Local