- Author: Dr. Adolf Thomälen (auth.)
- Language: German
- Year: 1914
- Author: Dr. Adolf Thomälen (auth.)
- Language: German
- Year: 1918
- Author: Dr. Adolf Thomälen (auth.)
- Language: German
- Year: 1920
- Author: Dr. Adolf Thomälen (auth.)
- Language: German
- Year: 1907
- Author: Dr. Adolf Thomälen (auth.)
- Language: German
- Year: 1912
- Author: Dr. Adolf Thomälen (auth.)
- Language: German
- Year: 1922
- Author: Professor Dr. Adolf Thomälen (auth.)
- Language: German
- Year: 1929
- Author: Dr. Adolf Thomälen (auth.)
- Language: German
- Year: 1906
- Author: Dr. Adolf Thomälen (auth.)
- Language: German
- Year: 1914