L B · L. R. · L Ruff · Laura Ruff
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Instructor's manual and test bank to accompany Understanding and using MS-DOS/PC DOS | 978-0-314-96206-5 | 1986 | |
| Understanding and Using MS-Dos/PC DOS | 978-0-314-96205-8 | 1986 | Mary K. Weitzer |
| Understanding and using MS-DOS/PC DOS: The first step | 978-0-314-50330-5 | 1989 | |
| Understanding and Using Pfs: File/Report | 978-0-314-96215-7 | 1986 | Mary K. Weitzer |
| Understanding and Using Pfs: Write | 978-0-314-96217-1 | 1985 | " |