000 00258nam a2200109Ia 4500
008 160921s9999 xx 000 0 und d
100 _aSINGH,.B.P.
245 _aEDUCATIONAL TECHNOLOGY
260 _bVINOD PUSTAK MANDIR
_c2008
300 _a311,8
942 _cBK
999 _c31957
_d31957