Harvey R. · Harvey Roehl · Harvey Rowell
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Mule: A Treatise on the Breeding, Training, and Uses, to Which He May Be Put | 978-0-318-12504-6 (0-318-12504-8) | 1984 |
| The Mule: A Treatise on the Breeding, Training, and Uses to Which He May Be Put | 978-0-318-12511-4 (0-318-12511-0) |