00391nam a2200145Ia 4500008004100000020001500041041001200056082001600068100001600084245006600100260003800166300000800204650001600212700001700228221030s9999    xx            000 0 und d  a9812400699  aEnglish  a105.23bFly  aI. M. Flynn 0aUnderstanding Operating Systemscby I. M. Flynn, A. M. Mchoes  bThomson LearningaSingaporec2001  a462  aBE Computer  aA. M. Mchoes