| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Grazing and Conservation Management | 978-0-412-47520-7 (0-412-47520-0) | 1998 | Michiel F. WallisDe Vries · Sipke E. Van Wieren |
| Netherlands-Wetlands | 978-0-7923-2473-7 (0-7923-2473-0) | 1993 | E.P.H. Best |