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Anseer.: F. Pohl, Gladiator at Law-1
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Anseer.: F. Pohl, Gladiator at Law-2
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Anseer.: Frederik Pohl, Alternating Currents
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Anseer.: Frederik Pohl, Gateway
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Anseer.: Frederik Pohl, Beyond the Blue Event Horizon
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Anseer.: Frederik Pohl, Heechee Rendezvous
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Anseer.: Frederik Pohl, The Annals of the Heechee
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Anseer.: Frederik Pohl, The Annals of the Heechees, por Antoni Garcés
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Anseer.: Frederik Pohl, The Merchants War
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Anseer.: Frederik Pohl, Search the Sky
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Anseer.: Frederik Pohl, The Gold at the Starbow's End por John Conrad Berkey