A. H. · G. A. · Geoffrey A.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Amphibians and Reptiles in Colorado | 978-0-87081-521-8 (0-87081-521-0) | 1999 |
| Amphibians and Reptiles in Colorado, Revised Edition | 978-0-87081-534-8 (0-87081-534-2) | 1999 |
| Connecticut Wildlife: Biodiversity, Natural History and Conservation | 978-1-58465-369-1 (1-58465-369-8) | 2004 |