| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Road to Extinction: Problems of Categorizing the Status of Taxa Threatened With Extinction Proceedings of a Symposium Held by the Species Survival Co | 978-2-88O32-929-7 (2-88O32-929-9) | 1987 | R. S. R. Fitter |