000 00336nam a2200133Ia 4500
005 20260720174551.0
008 260720s2004 xx 000 0 und d
041 _aeng
082 _a371.333 VENE
100 _aVenkataiah, S
_9268303
245 _aEducational technology
260 _aNew Delhi
_bA P H Publishing
_c2004
300 _a234p
999 _c242381
_d242381