00343nam a2200133Ia 4500008004100000020001500041041001200056082001600068100001700084245005500101260003700156300000800193650000800201221030s9999    xx            000 0 und d  a9812403957  aEnglish  a105.23bDun  aF. R. Dungan 0aElectronic Communications Systemscby F. R. Dungan  bVikas Pub HouseaNew Delhic2002  a819  aECE