000 00315nam a2200133Ia 4500
005 20251003125758.0
008 251003s9999 xx 000 0 und d
082 _a621.38
100 _aJ.G.Proakis
245 0 _aContemporary Communication System
260 _bThomson
_aBoston
_c2007
300 _a488
942 _cBK
999 _c38691
_d38691