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Thrice Upon A Time is a science fiction novel by James P. Hogan, first published in 1980. Unlike most other time travel stories, Thrice Upon A Time considers the ramifications of sending messages into the past and/or receiving messages from the future, rather than the sending of physical objects through time.
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The Legend That Was Earth is a novel by science fiction author James P. Hogan; it was published in 2000 by Baen Publishing Enterprises. Not only is it a fast-paced science fiction adventure, it also embraces certain themes common to science fiction, such as dystopias, alien encounters, and the distinctions of …
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