| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| The Waltham Book of Companion Animal Nutrition | Hardcover | 978-0-08-040843-9 (0-08-040843-5) | 1993 | |
| The Waltham Book of Companion Animal Nutrition | Paperback | 978-0-08-040844-6 (0-08-040844-3) | 1993 | |
| The Waltham Book of Human Animal Interaction: Benefits and Responsibilties of Pet Ownership | Hardcover | 978-0-08-042285-5 (0-08-042285-3) | 1995 | I. Robinson |