000 00314nam a2200121Ia 4500
008 220601s2012 xx 000 0 eng d
100 _aCOUCH,LEON W
245 0 _aDIGITAL AND ANALOG COMMUNICATION SYSTEMS
250 _a7TH Ed.
260 _c2012
_aNew Delhi
_bPEARSON EDUCATION
300 _a563
942 _2ddc
_cBTECH
999 _c3284
_d3284