00537nam a22001937a 450000500170000001000130001702000220003003500130005203700160006504000120008108200150009310000150010824500530012326000300017627000560020630000240026265000270028665000300031320170124110205.0  aB-018729  c00.00a8172730284  aB-018729  bCen Lib/Ret  aDPLbEN  a004.6bRAI  aRai, A. N.  aCommunication in the digital age /cby A. N. Rai  aDelhibAuthorspressc2000  bDelhie110092aE-35-/103, Jawahar Park, Laxmi Nagar  avi,346p. c22cm(Hb)  aDigital communications  aTelecommunication systems