Synopsis
History
First publication: Astounding February 1957
Review
Videos
We have the story in these editions:
Where Do We Go From Here?, edited by Isaac Asimov, paperback, Fawcett Crest, 1976-01-00
The Great SF Stories 19 (1957), edited by Isaac Asimov and Martin H. Greenberg, paperback, DAW Books, 1989-02-00
All of the stories in the Federation series:
Ullr Uprising
Four-Day Planet
The Edge of the Knife
Graveyard of Dreams
Oomphel in the Sky
1 Omnilingual
