- Author: Prof.Dr. Theo Scherer (auth.)
- Language: German
- Year: 1980
- Author: Prof. Dr. Theo Scherer (auth.)
- Language: German
- Year: 1987
- Author: Prof. Dr. Theo Scherer (auth.)
- Language: German
- Year: 1980
- Author: Prof. Dr. Theo Scherer (auth.)
- Language: German
- Year: 1987