"Rule 18" is a 1938 science fiction novelette by American writer Clifford D. Simak, credited as launching Simak's career and helping inspire the writing style of Isaac Asimov. It won a Retrospective Hugo Award for Best Novelette in 2014.
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Placement
- contained in Epilog and Other Storiescollection
- contained in The Autumn Land and Other Storiescollection