00281nam a2200109Ia 4500008004100000082001500041100002000056245004100076250001200117264003200129300001000161200527s9999||||xx |||||||||||||| ||und||  a155.45 BAK  aBaker, Harry J. 0aIntroduction to Exceptional Children  a3rd ed.  bThe Macmillan Companyc1964  a523p.