| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Trails for the Twenty-First Century: Planning, Design, and Management Manual for Multi-Use Trails | 978-1-55963-819-7 (1-55963-819-2) | 2001 | Charles Flink · Robert Searns · Rails to Trails Conservancy |
Karsten Oelze · KerstenMatwin Olga · Kristina Olls · Krystyna Oleksy