- Author: Rudolf Sachs (auth.)
- Language: German
- Year: 1984
- Author: Rudolf Sachs (auth.)
- Language: German
- Year: 1973
- Author: Rudolf Sachs (auth.)
- Language: German
- Year: 1985
- Author: Rudolf Sachs (auth.)
- Language: German
- Year: 1990
- Author: Rudolf Sachs (auth.)
- Language: German
- Year: 1973