00881nam a22002412a 450000100060000000300080000600500170001400800410003103500510007204000370012304100080016008200210016810000350018924501110022425000120033526000630034730000640041049000360047450400670051065000140057765000120059183000360060347739BD-RjUL20211209054401.0190810s1940    nyuabe   b    000 0 eng d  aOCLC ocm00784041 from D951018Ma(BD-RjUL)47858  aDLCcCSUdSERdEQOdBD-RjULbeng  aeng  a371.92bHEE 19401 aHeck, Arch Oliver,d1887-1976.14aThe education of exceptional children:bits challenge to teachers, parents, and laymen /cby Arch O. Heck.  a1st ed.  aNew York ;aLondon :bMcGraw-Hill book company, inc,c1940  axviii, 536 p. :billus. (incl. maps, plans) diagrs.c24 cm.1 aMcGraw-Hill series in education  a"Selected bibliography" at end of each chapter except the last 0aEducation 0aAbility 0aMcGraw-Hill series in education