_:ovgXbeiG33 "national_book_award_for_science_fiction". _:ovgXbeiG33 . . . . "Source: Freebase - The World's database". . . . . . . _:ovgXbeiG33. . . . "National Book Award for Science Fiction"@en. . . "Paperback"@en. . "1980". . . . "Hardcover"@en. . "1980". .