00293nam a2200109Ia 4500008004100000041000800041082002000049100003700069245004800106260002200154365000700176230303s9999    xx            000 0 und d  aeng  a621.3815951 STE  aSTERN (HAROLD) MAHMOUD (SANY A.)  aCommunication Systems : Analysis and Design  aNEW YORKbPEARSON  cRS