00480nam a2200157Ia 4500008004100000020001400041082001400055100001800069245005800087250000800145260004500153300002800198500001900226600002700245650005000272240925s9999    xx            000 0 und d  a131756052  a004.6 BLA  aBlack, Uyless 0aComputer Networks: protocols standards and interfaces  a2nd  aNew Jersey:bPrintice- Hall Int.c,1993.  axii,436p.bNAfOriginal  aIncludes Index  aEngineering Technology  aComputer science, information & general works