First published in the author's book, The Inequality of Man.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| June 1962 |
|
Great Science Fiction by Scientists | Collier Books | Anthology | 123 |
| June 1962 |
|
Great Science Fiction by Scientists | Collier Books | Anthology | 123 |
| June 1962 |
|
Great Science Fiction by Scientists | Collier Books | Anthology | 123 |
| 1966 | Great Science Fiction by Scientists | Collier Books | Anthology | 123 | |
| 1967 |
|
Great Science Fiction by Scientists | Collier Books | Anthology | 123 |
| 1968 |
|
Great Science Fiction by Scientists | Collier Books | Anthology | 123 |
| 1970 |
|
Great Science Fiction by Scientists | Collier Books | Anthology | 123 |
| 1973 |
|
Great Science Fiction by Scientists | Collier Books | Anthology | 123 |
| 1974 |
|
Galaktika 8: Tudományos-fantasztikus antológia | Kozmosz Könyvek | Anthology | 83 |
| 1978 |
|
Great Science Fiction by Scientists | Collier Books | Anthology | 123 |