00386nam a2200145Ia 4500008004100000020001500041041001200056082001600068100001600084245007000100260003600170300000800206650000800214700001800222221030s9999    xx            000 0 und d  a8121920000  aEnglish  a105.23bSch  aM. Schwartz 0aCommunication systems & Techniquescby M. Schwartz, W. R. Bennett  bS. Chand & Co.aNew Delhic2000  a618  aECE  aW. R. Bennett