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Incoming Resources
- Beyond the blue event horizon, Frederik Pohl
- Pohl, Frederik, Heechee saga, bk. 2
- Pohl, Frederik, Heechee saga, bk. 1
- The space merchants, Frederik Pohl and C.M. Kornbluth
- The annals of the Heechee, Frederik Pohl
- Pohl, Frederik, Heechee saga, bk. 4
- Man plus, Frederik Pohl
- Gateway, a novel, Frederik Pohl