1.
Using DOS, WordPerfect 5.1, Lotus 1-2-3 Release 2.2, and dBASE III Plus
by Cassel, Don
ISBN: 9780139528477
List Price: $37.60
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3.
DBASE II Simplified for the IBM Personal Computer
by Cassel, Don
ISBN: 9780131959422
List Price: $24.33
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WordStar Simplified for the IBM Personal Computer
by Cassel, Don
ISBN: 9780139636202
List Price: $24.33
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Basic Programming for the Commodore Plus/4 and Commodore 16 (Micropower Series)
by Don Cassel
ISBN: 9780697006042
List Price: $14.95
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Easywriter Simplified for the IBM Personal Computer
by Cassel, Don
ISBN: 9780132224314
List Price: $12.95
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Learning Dos, Wordperfect 4.2, Lotus 1-2-3/Twin, and dBASE III Plus
by Cassel, Don
ISBN: 9780139461873
List Price: $33.60
18.
Introduction to Computers and Information Processing
by Cassel, Don, Jackson, Martin
ISBN: 9780835931540
List Price: $8.33
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Introduction to Computers and Information Processing
by Cassel, Don
ISBN: 9780835931816
List Price: $13.00