Our Man in Space / Ultimatum in 2050 A.D.

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Overview:

Title: Our Man in Space / Ultimatum in 2050 A.D.
Author: Bruce W. Ronald Jack Sharkey
Year: 1965
Type: Omnibuses

Editions/Publications:

Unknown. Our Man in Space / Ultimatum in 2050 A.D. (Unknown, Bruce W. Ronald, Ace Books, $0.45, 131+120 pages, dos, Omnibus)
Unknown. Our Man in Space / Ultimatum in 2050 A.D. (Unknown, Jack Sharkey, Ace Books, $0.45, 131+120 pages, dos, Omnibus)