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| Author | Arkady and Boris Strugatsky |
|---|---|
| Original title | За миллиард лет до конца света |
| Language | Russian |
| Genre | Science fiction, paranoid fiction |
| Publisher | Macmillan |
Publication date | 1977 |
| Publication place | Soviet Union |
Published in English | 1978 |
| Pages | 143 |
| ISBN | 0-02-615180-4 |
Definitely Maybe (Russian: За миллиард лет до конца света, romanized: Za milliard let do kontsa sveta, literal translation: A Billion Years Before the End of the World, sometimes called Definitely Maybe: A Manuscript Discovered Under Unusual Circumstances) is a science fiction novel by Russian writers Arkady and Boris Strugatsky, first published 1977.