000 00389 a2200157 4500
020 _a0023252812
082 _a621.382
_bCOU
090 _c3624
_d4481
100 _aCouch, Leon W.
245 _aDigital and analog communication systems
250 _a4th
260 _aNew York
_bMacmillan
_c1993
_g1993
300 _axxix,827p.
_c24cm
650 _aCOMMUNICATIONS ENGINEERING
942 _cSR
999 _c32623
_d32623