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Fritz Brehmer

Nebel der Andromeda
Das merkwürdige Vermächtnis eines Irdischen
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John Wiggin

Cave-Dwellers of Saturn
The Jameson Satellite

Neil R. Jones

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Neil R. Jones

The Jameson Satellite
The Defiant Agents

Andre Norton

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Andre Norton

The Defiant Agents
Comet's Burial

Raymond Z. Gallun

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Raymond Z. Gallun

Comet's Burial
Warning from the Stars

Ron Cocking

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Ron Cocking

Warning from the Stars
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Everett B. Cole

The Weakling