R.S. · R. Schmitz · Ruth Schmitz-Ehmke
| title | media type | ISBN-13 | year of publica- tion |
|---|---|---|---|
| First Look at DOS 6.0 | Paperback | 978-0-07-056880-8 | 2004 |
| Practical Dos! | " | 978-0-07-911987-2 | 1995 |
| Practical DOS! | Unknown Binding | 978-0-07-056827-3 | 1992 |
| Practical DOS! | Paperback | 978-0-07-837953-6 | 1992 |
| Practical Dos!/Book and 3 1/2" Disk | Hardcover | 978-0-07-832034-7 | 1992 |
| Practical Dos-MS/Pc-Dos/Book and Disk | " | 978-0-07-558222-9 | 1991 |
| Using DOS 5.0 | Paperback | 978-0-07-911493-8 | 1993 |
| Using DOS 5.0 | " | 978-0-07-911494-5 | 1993 |