IndyPublish.com · Klostermann · Rudolf Steiner Press
| title | ISBN-13 (ISBN-10) | year of publica- tion | |
|---|---|---|---|
| Man or Matter | 978-1-4142-5445-6 (1-4142-5445-8) | 2005 | |
| Man or Matter: Introduction to a Spiritual Understanding of Nature on the Basis of Goethe's Method of Training and Observation | 978-0-85440-430-8 (0-85440-430-9) | 1985 | |
| Mensch und Materie | 978-3-465-00285-7 (3-465-00285-7) | 1987 |