| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| dBASE III Plus | 978-0-02-800312-2 | 1992 | |
| Increasing Your Productivity: dBASE III Plus/Book and 5 1/4" Disk | 978-0-02-800295-8 | 1991 | Paul W. Ross · James E. Shuman |
| Increasing Your Productivity: Wordperfect Version 5.1/Book and 5 1/4" Disk | 978-0-02-683141-3 | 1991 | Lorraine J. Laby |
| Object-oriented Turbo Pascal: A new paradigm for problem solving and programming | 978-0-07-025533-3 | 1989 | |
| Object-Oriented Turbo Pascal Problem Solving and Programming/Book and Disks | 978-0-07-558225-0 | 1990 | |