| Original Language | Polish |
| First published | 1963 |
| Links | http://www.isfdb.org/cgi-bin/title.cgi?1439942 |
| Notes | First published in the "Astronautyka" magazine in 1963. |
Editions 1
Add Edition| Title | Publisher | Format | Language | Location | Dates | Impression | |
|---|---|---|---|---|---|---|---|
 | Galaktika 104 | Móra Ferenc Ifjúsági Könyvkiadó | Magazine | Hungarian | Budapest, Hungary | 1989-05 |