Bertram Philipp · Bertrand Philippe · Bruder Philip
Leaves of Grass Press · Strube
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Andesbjergenes hemmelighed | 978-87-7508-124-0 (87-7508-124-5) | 1992 |
| Secret of the Andes | 978-0-915070-02-2 (0-915070-02-2) | 1976 |