The Caves of Mars / Space Mercenaries
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Overview:
- Title: The Caves of Mars / Space Mercenaries
- Author: Emil Petaja A. Bertram Chandler
- Year: 1965
- Type: Omnibuses
Editions/Publications:
- Unknown. The Caves of Mars / Space Mercenaries (Unknown, Emil Petaja, Ace Books, $0.45, 125+131 pages, dos, Omnibus)
- Unknown. The Caves of Mars / Space Mercenaries (Unknown, A. Bertram Chandler, Ace Books, $0.45, 125+131 pages, dos, Omnibus)