000 00279nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aGeorge Kennedy/ Bernard Davis
245 0 _aElectronic communication systems
250 _a4th
260 _aNew Delhi
_bTMH
_c2002
942 _cBK
999 _c11200
_d11200