| Author: | Kupiainen, Alpo, 1888-1937 |
| Subject: | PS, Science fiction, Mars (Planet) -- Fiction |
| Format: | Text |
| Date issued: | 2021 |
| Language: | Finnish |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Marsin ritarit [electronic resource] / Alpo Kupiainen |