000 00263nam a2200121Ia 4500
008 230321s9999 xx 000 0 und d
082 _bVEN
100 _aVenkataiah, S.
245 0 _aEduactional Technology
260 _bA.P.H
_c2004
300 _a234
942 _cBK
999 _c1270
_d1270