00262nam a2200109Ia 4500008004100000041001200041082001100053100002400064245005200088260000600140650000600146221030s9999    xx            000 0 und d  aEnglish  a105.23  aAndrew S. Tanenbaum 0aModern Operating Systemcby Andrew S. Tanenbaum  c0  aB