00414    a2200145   4500020001500000082001600015100002000031245003300051260004200084300002100126650002100147650003500168650004000203700002500243  a0201565331  a004.65bSCH  aSchafer, Werner  aSystems network architecture  aEnglandbAddison - Wesleyc1992g1992  aviii,222p.c24cm  aComputer science  aInterfacing and communications  aCommunications network architecture  aMeulen, Helmut an de