00337nam a2200133Ia 4500100002700000650001900027366000700046654002700053245002700080260005500107082002100162300000800183546001200191  aBhattacharya/Amitabha   aCommunications  f25  adigital communications  aDigital communications  bMcGraw-Hill International EditionaNew Delhic2006  a621.382/BHAbBHA  a516  aENGLISH