00392    a2200145   4500020001500000082001300015100001800028245003800046250001200084260003400096300002000130440003800150650004100188700001700229  a0333598482  a005bLIS  aLister, A. M.  aFundamentals of operating systems  a5th ed.  aLondonbMacmillanc1975g1993  axiv,196p.c23cm  aMacmillan computer science series  aComputer programming ,programs ,data  aEager, R. D.