00461nam a2200157Ia 4500008004100000020001500041082001400056100001500070245004000085250000800125260005100133300002900184500001900213600002100232650005000253240925s9999    xx            000 0 und d  a812650336X  a004.6 HOR  aHorak, Ray 0aCommunications Systems and Networks  a3rd  aNew Delhi:bAPH Publishing Corporationc,2002.  axlix,954p.bNAfOriginal  aIncludes Index  aComputer Science  aComputer science, information & general works