| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Conservation for the Twenty-first Century | Paperback | 978-0-19-507719-3 (0-19-507719-9) | 1992 | David L. Western |
| Conservation for the Twenty-first Century | Hardcover | 978-0-19-505474-3 (0-19-505474-1) | 1989 | " |