- Author: Wiesner Reinhard
- Language: German
- Year: 1974
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- Language: German
- Year: 2011
- Author: Knobel Ulrike
- Language: German
- Year: 2000
- Author: Grunewald Helke
- Language: German
- Year: 2005
- Author: Duwendag Dieter
- Language: German
- Year: 1995