00370nam a2200145Ia 4500008004100000020001500041041001200056082001600068100001600084245005900100250000800159260004100167300000800208650000800216221030s9999    xx            000 0 und d  a8178083280  aEnglish  a105.23bLeo  aL. W. Couch 0aDigital & Analog Communication Systemscby L. W. Couch  a6th  bPearson   EducationaNew Delhic2005  a774  aECE