000 00259nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aYadav, D.S.
245 0 _aShiksha Manovighyan
260 _aDelhi
_bPrerna Prakashan
_c2008
300 _a236p.
942 _cBK
999 _c13503
_d13503