- Author: Jakob Wackernagel Albert Debrunner
- Language: German
- Year: 1954
- Author: Jakob Wackernagel Albert Debrunner
- Language: German
- Year: 1930
- Author: Jakob Wackernagel Albert Debrunner
- Language: German
- Year: 1954
- Author: Jakob Wackernagel Albert Debrunner
- Language: German
- Year: 1930