00365nam a2200145 a 450000500170000002000150001708200160003210000260004824500300007425000120010426000390011630000250015570000230018070000160020320251203110612.0  a981253055X  a005.43bSIL  aSilberschatz, Abraham  aOperating System Concepts  a6th ed.  aNew YorkbJohn Wiley & Sons.c2003  axxi,951p.c24 cm. PB  aGalvin, Peter Baer  aGagne, Greg