00328nam a2200133Ia 4500008004100000020001500041041001200056082001600068100001600084245005300100260002500153300000800178650000800186221030s9999    xx            000 0 und d  a8120322290  aEnglish  a105.23bSch  aW. Schweber 0aElectronic Communication Systemscby W. Schweber  bPHIaNew Delhic2002  a820  aECE