00269nam a2200097Ia 4500008004100000082001500041100002500056245005600081260002700137365000700164230302s9999    xx            000 0 und d  a005.642STA  aSTALLINGS  (William)  aOperating System : Internals and Design Principles   aNEW YORKb JOHN WILEY   cRS