Space Captain / The Mad Metropolis

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Overview:

Title: Space Captain / The Mad Metropolis
Author: Murray Leinster Philip E. High
Year: 1966
Type: Omnibuses

Editions/Publications:

Unknown. Space Captain / The Mad Metropolis (Unknown, Murray Leinster, Ace Books, $0.45, 142+112 pages, dos, Omnibus)
Unknown. Space Captain / The Mad Metropolis (Unknown, Philip E. High, Ace Books, $0.45, 142+112 pages, dos, Omnibus)