| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| CIW Foundations Certification Bible | 978-0-7645-4908-3 (0-7645-4908-1) | 2002 | Keith Olsen · Don Loughran |
| Ecology and Environment | 978-0-367-17882-6 (0-367-17882-6) | 2018 | R N Bhargava · V Rajaram · Lynn Tiede |
K. Olson · Kate Olson · Keith G. Olson · Keith Olsen · Keith W. Olson