00549cam a2200193 a 45000010008000000030008000080050017000160080041000330350012000740400021000860820016001071000043001232450043001662500012002092600049002213000033002705000020003036500032003232433760BD-DhUL20161116134603.0860919s1950    xxka          001 0 eng    a2433760  cBD-DhULdBD-DhUL  a136.76bBUB1 aBurt, Cyril Lodowic,cSir,d1883-1971.14aThe backward child /c Sir Cyril Burt.  a3rd ed.  aLondon :bUniversity of London Press,c1950.  axx, 704 p. :bill. ;c22 cm.  aIncludes index. 0aChildren with disabilities.