Synopsis
History
First publication: Astounding April 1942
Review
Videos
We have the story in these editions:
The Great SF Stories 4 (1942), edited by Isaac Asimov, Martin H. Greenberg, paperback, DAW Books, 1980-10-00
All of the stories in the Rull series:
The Second Solution
The Rull
The Sound
The Green Forest
The First Rull
Cooperate—Or Else!
The War Against the Rull
The Gryb
