| title | media type | ISBN-13 | year of publication | |
|---|---|---|---|---|
| Alligatoren und Krokodile | Gebunden | 978-3-570-01480-6 | 1992 | |
| Alligators & Crocodiles | Hardcover | 978-0-517-07012-3 | 1991 | |
| Birds of the Seychelles and the Outlying Islands | Paperback | 978-0-00-219829-5 | 1986 | |
| Birds of the Seychelles and the Outlying Islands | Hardcover | 978-0-00-219618-5 | 1975 | |
| The Birds of Seychelles and the Outlying Islands | " | 978-0-00-216060-5 | 1974 | |
| The Elephant, The | " | 978-1-85283-057-1 | 1990 | |
| The Secret World of Kangaroos | Library Binding | 978-0-7398-4986-6 | 2002 |
Bertelsmann · Boxtree Ltd · Crown Publishers · HarperCollins · STECK-VAUGHN