00385nam a2200145Ia 4500008004100000020001800041040002500059082002900084082000900113100003600122245003200158250000800190260003300198490000800231240730s9999    xx            000 0 und d  a9781259921301  aNORSU-GuicNORSU-Gui  aCir.005.43/H69s/2017/c.2  b4164  aJane Holcombe, Charles Holcombe 0aSurvey of operating systems  ac.2  aNew YorkbMc graw hillc2017  vc.2