Fifth Column of Mars
From Author Wars - https://authorwars.com/books/fifth-column-of-mars-88209.html
Overview:
- Title: Fifth Column of Mars
- Author: Robert Moore Williams
- Year: 1940
- Type: Short Fiction
Editions/Publications:
- Unknown. Amazing Stories, September 1940 (Unknown, Robert Moore Williams, Ziff-Davis Publishing Company, $0.20, 148 pages, pulp, MAGAZINE)
- Unknown. Amazing Stories Quarterly (Reissue), Spring 1941 (Unknown, Robert Moore Williams, Ziff-Davis, $0.25, pulp, MAGAZINE)