| Author: | Smith, George O. (George Oliver), 1911-1981 |
| Subject: | PS, Science fiction, Pluto (Dwarf planet) -- Fiction, Planets -- Environmental engineering -- Fiction |
| Format: | Electronic text |
| Date issued: | 2022 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Circle of Confusion [electronic resource] / George O. Smith |