- Author: Claude Kaspar
- Language: German
- Year: 1998
- Author: Harald Dettmer, Bernd Eisenstein, Axel Gruner, Thomas Hausmann, Claude Kaspar, Werner Oppitz, Anna Maria Pircher-Friedrich, Gerhard Schoolmann
- Language: German
- Year: 2005
Tourismustypen
pdf
- Author: Harald Dettmer, Elisabeth Glück, Thomas Hausmann, Claude Kaspar, Johann Peter Logins, Werner Oppitz, Werner Schneid
- Language: German
- Year: 2000