000 00307nam a2200109Ia 4500
008 210616s9999 xx 000 0 und d
100 _aJohn G. Proakis
245 0 _aFundamentals of communication systems
260 _c2012
650 _aEngineering and Allied Operations
_bElectrical Engineering
942 _cBK
999 _c5588
_d5588