00377nam a2200145Ia 4500008004100000020001500041041001200056082001600068100001600084245007400100260002500174300000800199650000800207700001600215221030s9999    xx            000 0 und d  a0074603396  aEnglish  a105.23bSin  aR. P. Singh 0aCommunication Systems : Analog & Digitalcby R. P. Singh, S. D. Sapre  bTMHaNew Delhic2002  a592  aECE  aS. D. Sapre