00441nam a2200133Ia 4500008004100000041001200041082001700053100002200070245012000092250001300212260004700225300001300272650002200285231221s9999    xx            000 0 und d  aEnglish  a001.642  DEI  aDeitel, Harvey M. 3aAn Introduction to operating systems: Including case studies in unix, OS/2, MS-DOS, macintosh, UM,MVS, open systems  a2nd ed.   c1990bPearson Education (Singapore)aDelhi  axxvi+853  aoperating,systems