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Microsoft MS-DOS operating system

. viii, 340 p. , For Personal Computers Compatible with IBM Personal Computers 24 cm.

By Masters, Gary E.. San Francisco Sybex 1992 . xxxii, 1031 p. 23 cm. 9812141081

Redmond, WA Microsoft Corp. 1985 . xxv, 640 p. , Includes index 23 cm.

London Reader's Digest Association Limited 2003 . 160 p. , Includes index 30 cm. 0276425006 (stage 2) | 0276424999 (stage 1)

London Reader's Digest Association Limited 2003 . 160 p. , Includes index 30 cm. 0276425006 (stage 2) | 0276424999 (stage 1)

New York : : Oxford University Press , 1983 . x, 393 pages .: , "General editor: Valerie Illingworth"--p. vii. 24 cm. 0198539053