Facts
- Author
- Büttner, August
- Language
- German
- Project Gutenberg No.
- 22738
- Released on Project Gutenberg
- September 23, 2007
- Bookshelves
- DE Sachbuch, Psychiatry/Psychology, Philosophy & Ethics
- Public domain in the USA
- yes
Sources: Project Gutenberg catalogue (public domain), Wikidata (CC0)