| Author: | Winterbotham, R. R. (Russell Robert), 1904-1971 |
| Subject: | PS, Science fiction |
| Format: | Text |
| Date issued: | 2007 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | The Whispering Spheres [electronic resource] / R. R. Winterbotham |