Book · Open Library
- Author
- Isaac Asimov
- First published
- 1972
- Editions
- 49
- Subjects
- Fiction in English, Hugo Award Winner, award:hugo_award=1973, award:hugo_award=novel, Science fiction, American Science fiction, Fiction, science fiction, general, award:nebula_award=novel
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1972 American novels1972 science fiction novelsAmerican English-language novelsDoubleday (publisher) booksHard science fictionHugo Award for Best Novel–winning worksLocus Award–winning worksNebula Award for Best Novel–winning worksNonlinear narrative novelsNovels about parallel universesNovels first published in serial formNovels set on the Moon