000 00262nam a2200121Ia 4500
082 _a621.382 COL
100 _aCOUCH, W. LEON
245 _aDIGITAL AND ANALOG COMMUNICATION SYSTEMS
250 _a6
260 _bPEARSON
_c2004
300 _a758
942 _2ddc
_cB
999 _c58984
_d58984