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["Science fiction" "Hugo Award Winner" "award:hugo_award=1978" "award:hugo_award=novel" "Fiction science fiction general" "award:nebula_award=novel" "American Science fiction" "Interplanetary voyages" "Fiction" "Human-alien encounters" "Interstellar travel" "Space flight" "Life on other planets" "Nebula Award" "Hugo Award" "Long Now Manual for Civilization"]