000 00303nam a2200133Ia 4500
008 241129s9999 xx 000 0 und d
100 _aGeorge, Kennedy
245 0 _aElectronic communication systems
250 _a4th
260 _bTata McGraw Hill
260 _c2009
300 _a763
942 _cBK
999 _c21250
_d21250