00313nam a2200121 a 450000500170000002000150001708200200003210000440005224500300009625000120012626000340013830000190017220251203091647.0  a0201504804  a005.43,bD, sil  aSilberschatz, Abraham, Galvin, Peter B.  aOperating system concepts  a4th ed.  aReadingbAddison-Wesleyc1994  axvi,780p, 22cm