| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| A Bird Atlas of Kenya | 978-90-6191-716-8 (90-6191-716-6) | 1989 | Adrian Lewis · Derek Pomeroy |
| Tropical Ecology | 978-0-470-20942-4 (0-470-20942-9) | 1989 | M.W. Service · J.K.E. Egunjobi · N. Dickinson |