000 00322nam a2200133Ia 4500
008 160122s9999 xx 000 0 und d
041 _aEnglish
100 _aGeorge Kennedy
245 _aElectronic Communication Systems
250 _a4th
260 _bDelhi:Tata Mcgraw hill
_c1999
300 _a763p.
650 _aElectronic
999 _c782
_d782