000 00327nam a2200133Ia 4500
005 20251003125846.0
008 251003s9999 xx 000 0 und d
082 _a621.382
100 _aWilliam Schweber
245 0 _aElectronic Communication System
260 _bPhi Learning
_aNew Delhi
_c2012
300 _a802
942 _cBK
999 _c39916
_d39916