- Author: Adolf Beer
- Language: German
- Year: 1873
- Author: Adolf Beer
- Language: German
- Year: 1873
- Author: Adolf Beer
- Language: German
- Year: 1873
- Author: Adolf Beer
- Language: German
- Year: 1871
- Author: Adolf Beer (ed.)
- Language: German
- Year: 1871
- Author: Adolf Beer
- Language: German
- Year: 1877