WOLVERTON VAN LEARNING AND RUNNING MS-DOS: AWARD-WINNING TUTORIAL AND BOOK - WASHINGTON MICROSOFT CORPORATION 1991 - XVIII,573P. INCLUDES INDEX ISBN: 1-55615-430-5 Subjects--Topical Terms: OPERATING SYSTEMS(COMPUTERS), MS-DOS(COMPUTER FILE) LC Class. No.: QA 76.76 .O63 W64 1991 / C.1