| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Recovery of Gray Wolves in the Great Lakes Region of the United States | 978-0-387-87371-8 (0-387-87371-6) | 2009 | Adrian P. Wydeven · Timothy R. Van Deelen |
| Recovery of Gray Wolves in the Great Lakes Region of the United States: An Endangered Species Success Story | 978-0-387-85951-4 (0-387-85951-9) | 2009 | Adrian P. Wydeven · Timothy R. van Deelen |