Zarkon, Lord of the Unknown in The nemesis of evil: A case from the files of Omega Author: ? Book Type: Unknown Binding Publication Date: 1975 |
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The Nemesis of Evil (Zarkon, Lord of the Unknown) Author: ? Book Type: Paperback Publication Date: 1999 |
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The Volcano Ogre (ZARKON, Lord of the Unknown, and the Omega Crew) Author: 1 Book Type: Mass Market Paperback |
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Zarkon, Lord of the Unknown, in the Earth-Shaker: A Case from the Files of Omega Author: 1 Book Type: Hardcover Publication Date: 1982 |
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Zarkon, Lord of the Unknown in invisible death: A case from the files of Omega Author: ? Book Type: Unknown Binding |
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