00317nam a2200121Ia 4500008004100000082001800041100002000059245002100079250000900100260003400109300000600143650004600149150614s9999    xx            000 0 und d  a005.43  DEI-O  aHarvey M.Deitel  aOperating System  aI ED  bAddison-Wesley Pub. Co.c1990  a0  aOperating System Harvey M.Deitel,Computer