One Billion Years to the End of the World

{{Tr|Antonina W. Bouis}}.

"First published in Penguin Classics Science Fiction 2020" on copyright page, with "001" indicating first printing. Copyright page also states "First published in the USSR as За миллиард лет до конца света, 1977" [over] "First published in the United States of America as Definitely Maybe, 1978". Tranlated by Antonina W. Bouis. Cover art credited on back cover, and titled 'Extended Field of Vision' (1935). Cover design by Jim Stoddart; cover image, text and Penguin logo are embossed.