- Author: Dr. W. Schweisheimer (auth.)
- Language: German
- Year: 1926
- Author: Dr. W. Schweisheimer (auth.)
- Language: German
- Year: 1926
- Author: Dr. W. Schweisheimer (auth.)
- Language: German
- Year: 1925
- Author: Dr. W. Schweisheimer (auth.)
- Language: German
- Year: 1923
- Author: Dr. W. Schweisheimer (auth.)
- Language: German
- Year: 1926