000 00375 a2200133 4500
005 20250618081322.0
020 _a0-02-325391-6
082 _aLM 621.380 COU
100 _aCOUCH, L. W.
245 _aDigital and Analog communication systems
260 _aLondon,
_bMacmillan,
_c1990.
300 _axxix, 766p.: ill.; figure, graph, table.
_bIndex,
_c24cm.
942 _2ddc
_cBKS
999 _c4260
_d4260