000 00319nam a2200133Ia 4500
008 230222s9999 xx 000 0 und d
082 _a005.382
100 _aLeon W Couch Ii
245 0 _aDigital and Analog Communication Systems
250 _a6
260 _bPearson Education
_c2002
650 _aCOMPUTER
942 _cBK
999 _c114
_d114