| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Life at the Zoo: Behind the Scenes with the Animal Doctors | Paperback | 978-0-231-13249-7 (0-231-13249-2) | 2007 |
| Life at the Zoo: Behind the Scenes with the Animal Doctors | Hardcover | 978-0-231-13248-0 (0-231-13248-4) | 2004 |
P R · P. Robinson · P T · Phillip Robinson · T. R. · T. Robinson