00526nam a22001577a 4500020001800000040000900018082001700027100003000044245004400074250001600118260004600134650005100180942001200231999001900243952010600262  a9788131725436  cNust  a621.382bCOU  aLeon W. Couch, II9124397  aDigital and Analog Communication System  a7th Edition  aNew Delhi:bPearson Education Inc,c2009.  aDigital and Analog Communication System957656  2ddccBK  c610271d610271  00102ddc4070aCEMEbCEMEcGENd2024-07-10l0o621.382 COUpCEME- 46563r2024-07-10w2024-07-10yBK