Letter (Astounding Stories, February 1938): Future Evolution.
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Overview:
- Title: Letter (Astounding Stories, February 1938): Future Evolution.
- Author: John D. Clark, (Ph.D.)
- Year: 1938
- Type: Essays
Editions/Publications:
- Unknown. Astounding Stories, February 1938 (Unknown, John D. Clark, (Ph.D.), Street & Smith Publications, Inc., $0.20, 164 pages, pulp, MAGAZINE)