La Ballade de Bêta-2

Blurb

The Ballad of Beta-2 is a 1965 science fiction novel by Samuel R. Delany
The book was originally published as Ace Double M-121, together with Alpha Yes, Terra No! by Emil Petaja. The first stand alone edition was published in 1971. In 1977 a corrected edition came out, in a hardcover edition published by Gregg Press with an introduction by Marilyn Hacker.