00000nam a2200000 a 4500 20251203092006.0 0201509393 005.43, D, dei Deitel, Harvey M Introduction to Operating systems, Harvey M. Deitel, eng 2nd ed New York, Addison-Wesley, US 1990 xxv,853p. 20cm Unix OS2 Ms-Dos Open systems Eng _ 83204 C 60100 60100 0 0 0 0 PU PU 1998-07-16 0 005.43, D, dei 83204 1998-07-30 BK