| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Plant Diversity of Malesia: Proceedings of the Flora Malesiana Symposium commemorating Professor Dr. C. G. G. J. van Steenis Leiden, August 1989 | 978-0-7923-0883-6 (0-7923-0883-2) | 1990 | P. Baas · K. Kalkman |
| Thonner's Analytical Key to the Families of Flowering Plants | 978-90-220-0730-3 (90-220-0730-8) | 1981 | A. J. M. Leeuwenberg · C. E. Ridsdale · J. F. Veldkamp |
R. Goossens · Ray Goossens · Robert Geesink · Roy Gasnick · Rudolph G. T. Geesink