000 00349nam a2200145Ia 4500
003 PTTI
005 20251207204905.0
008 251207s9999 xx 000 0 und d
020 _c150
040 _aPTTI
245 0 _aEducational Technology
_cN. Venkatiah
260 _bAPH Pub. corporation
_aNew Delhi
_c2014
300 _a254
_bP. B. K
942 _cDELED
999 _c277
_d277