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Peter H. Diamandis
@PeterHDiamandis
·
Mar 26, 2023
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What's your favorite Hard Science Fiction book (or book series)?
65 answers
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https://www.upcarta.com/posts/63502
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Adriana Porter Felt
@__apf__
·
Jun 26, 2022
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What's your favorite pre-2010 sci-fi book that isn't from a very famous author?
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https://www.upcarta.com/posts/35034
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