- Author: Onno Klopp, Ute Mokros
- Language: German
- Year: 2006
- Author: Onno Klopp
- Language: German
- Year: 1852
- Author: Onno Klopp
- Language: German
- Year: 1858
- Author: Onno Klopp
- Language: German
- Year: 1854
- Author: Onno Klopp
- Language: German
- Year: 1856
- Author: Onno Klopp
- Language: German
- Year: 1882
- Author: Onno Klopp
- Language: German
- Year: 1863
- Author: Onno Klopp
- Language: German
- Year: 1862
- Author: Onno Klopp
- Language: German
- Year: 1861