R. Ziegler · Robert G. Ziegler · Robert L. Ziegler
Magination Press · New Riders Press · Sams
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Homemade Books To Help Kids Cope: AN EASY TO LEARN TECHNIQUE F/PARENTS & PROFESSIONALS | 978-0-945354-50-5 (0-945354-50-9) | 1992 | |
| Linux Firewalls | 978-0-672-32771-1 (0-672-32771-6) | 2005 | Steve Suehring |
| Linux Firewalls | 978-0-7357-1099-3 (0-7357-1099-6) | 2001 | |