| Author: | Leinster, Murray, 1896-1975 |
| Subject: | PS, Science fiction, Space colonies -- Fiction, Geology -- Fiction |
| Format: | Electronic text |
| Date issued: | 2022 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | The swamp was upside down [electronic resource] / Murray Leinster |