
- Author: Dr. Phil. Dr.-Ing. E. H. Dr. Phys. E. H. Robert Wichard Pohl (auth.)
- Language: German
- Year: 1944

- Author: Robert Wichard Pohl Dr. Phil. Dr.-Ing. E. H. Dr. Phys. E. H. (auth.)
- Language: German
- Year: 1943

- Author: R. W. Pohl Dr.-Ing. e. h. (auth.)
- Language: German
- Year: 1927

- Author: R. W. Pohl (auth.)
- Language: German
- Year: 1927

- Author: Dr. Phil. Dr.-Ing. E. H. Dr. Phy. E. H. R. W. Pohl (auth.)
- Language: German
- Year: 1941

- Author: R. W. Pohl (auth.)
- Language: German
- Year: 1935

- Author: R. W. Pohl (auth.)
- Language: German
- Year: 1931

- Author: Dr. Wilhelm Spreen (auth.)
- Language: German
- Year: 1924

- Author: Dr. Wilhelm Spreen (auth.)
- Language: German
- Year: 1924