| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Ruminant Diagnostic Medicine, An Issue of Veterinary Clinics: Food Animal Practice | 978-1-416O-5137-4 (1-416O-5137-6) | 2007 |
Dr Rob Callan · James R. Callan · R. C. · Rebecca Callan · Rebecca DeAngelis Callan · Richard Callan · Richard J. Callan · Rob Callan · Robert Callan · Robert J. Callan · Robert J. Callan DVM MS PhD DACVIM · Rory Callan