00322nam a2200145Ia 45000030006000000050017000060080041000230400009000640410012000730820016000851000022001012450036001232600009001593000008001680Nust20170105110257.0161124s9999    xx            000 0 und d  cIGIS  aEnglish  a004.62bSTA  aWilliam Stallings  aData and Computer Communication  c1997  a798