| Author: | Weiss, George Henry, 1898-1946 |
| Subject: | PS, Science fiction |
| Format: | Text |
| Date issued: | 2009 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | The Heads of Apex [electronic resource] / George Henry Weiss |