R. S. · R. Sawyer · R. T. · T.S.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Leech Biology and Behaviour: Anatomy, Physiology and Behaviour v. 1 | 978-0-19-857377-7 (0-19-857377-4) | 1986 |
| Leech Biology and Behaviour: Bibliography v. 3 | 978-0-19-857623-5 (0-19-857623-4) | 1986 |
| Leech Biology and Behaviour: Feeding, Biology, Ecology and Systematics v. 2 | 978-0-19-857622-8 (0-19-857622-6) | 1986 |