000 00254nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aOberoi, S.C.
245 0 _aEducational Technology
260 _aNew Delhi
_bABD
_c2004
300 _a520p.
942 _cBK
999 _c11408
_d11408