
- Author: Hans Planitz
- Language: German
- Year: 1965

- Author: Hans Planitz
- Language: German
- Year: 1965

- Author: Dr. Hans Planitz (auth.)
- Language: German
- Year: 1925

- Author: Dr. Hans Planitz (auth.)
- Language: German
- Year: 1931

- Author: Dr. Hans Planitz (auth.)
- Language: German
- Year: 1949