- Author: Dr. Karl Christian Behrens (auth.)
- Language: German
- Year: 1966
- Author: Dr. Karl Christian Behrens (auth.)
- Language: German
- Year: 1961
- Author: Dr. Dieter Römheld (auth.)
- Language: German
- Year: 1973
- Author: Dr. Johannes Renner (auth.)
- Language: German
- Year: 1972
- Author: Dr. Helmut Jacobi (auth.)
- Language: German
- Year: 1963
- Author: Dr. Johannes Bidlingmaier (auth.)
- Language: German
- Year: 1964
- Author: Dr. Helmut Jacobi (auth.)
- Language: German
- Year: 1972
- Author: Dr. Werner Löber (auth.)
- Language: German
- Year: 1973
- Author: Dr. Gerd Hänel (auth.)
- Language: German
- Year: 1974