| Author: | De Vet, Charles V., 1911-1997 |
| Subject: | PS, Science fiction, Short stories, Space ships -- Fiction, Life on other planets -- Fiction |
| Format: | Electronic text |
| Date issued: | 2023 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Survival factor [electronic resource] / Charles V. De Vet |