00348nam a2200145Ia 4500008004100000020001500041041001200056082001600068100001600084245005300100250000800153260002500161300000800186650000800194221030s9999    xx            000 0 und d  a8120322290  aEnglish  a105.23bSch  aW. Schweber 0aElectronic Communication Systemscby W. Schweber  a4th  bPHIaNew Delhic2002  a820  aECE