000 00266nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aSharma, A.R.
245 0 _aEducational Technology
260 _aAgra
_bVinod Pustak Mandir
_c2000
300 _a311+8p
942 _cBK
999 _c11202
_d11202