HUTCHINSON, Sarah E. Sawyer, Stacey C. Coulthar, Glen J. Dos 5.0 / [by] Sarah E.Hutchinson, Stacey C.Sawyer, Glen J.Coulthar - Boston IRWIN 1993 - x, 191 p. Includes Index. ISBN: 256134847 Subjects--Topical Terms: Dos Operating system Dewey Class. No.: 005.432DOS / HUT