000 00324nam a2200133Ia 4500
005 20250612122300.0
008 250601s1996 xx 000 0 eng d
020 _a9788183212991
100 _aN.venkataiah
245 0 _aEducational techlogy
260 _aNew delhi
_bCommonwelth pub
_c1996
300 _a234
942 _2ddc
_cBK
999 _c2799
_d2799