00345nam a2200133Ia 4500008004100000020001500041041001200056082001600068100001600084245005900100260003600159300000800195650000800203221030s9999    xx            000 0 und d  a8178083280  aEnglish  a105.23bCou  aL. W. Couch 0aDigital & Analog Communication Systemscby L. W. Couch  bAddison WesleyaNew Delhic2001  a758  aECE