000 00296nam a2200133Ia 4500
084 _aS:38
_bN5
100 _aS.K Goel
245 0 _aMental Retardation and Learning
260 _aDelhi
_bNational Psychology
_c1984
300 _a335p.
650 _aPsychology
700 _aA.K.Sen
942 _cBK
999 _c312836
_d312836