Letter (Astounding Stories, November 1937): Antigravity.

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Overview:

Title: Letter (Astounding Stories, November 1937): Antigravity.
Author: M. Erland
Year: 1937
Type: Essays

Editions/Publications:

Unknown. Astounding Stories, November 1937 (Unknown, M. Erland, Street & Smith Publications, Inc., $0.20, 164 pages, pulp, MAGAZINE)