CRC Press · Oxford University Press
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| A Revised Handbook to the Flora of Ceylon, Vol. XV, Part A: Ferns and Fern-Allies | 978-1-57808-384-8 (1-57808-384-2) | 2006 | |
| A Revised Handbook to the Flora of Ceylon, Vol. XV, Part B: Ferns and Fern-Allies | 978-1-57808-410-4 (1-57808-410-5) | 2006 | |
| Messel: An Insight into the History of Life and of the Earth | 978-0-19-854654-2 (0-19-854654-8) | 1992 | Stephen Schaal · Willi Ziegler · Willi Xiegler |