Le siècle de l'éternel été

From Author Wars - https://authorwars.com/publications/le-siecle-de-leternel-ete-330775.html

Overview:

Title: Le siècle de l'éternel été
Author: James Blish
Year: 1975
ISBN-10: 222600193X
Publisher: Albin Michel
Pages: 246
Binding: Paperback
Type: Chapter Book
Title Reference: Le siècle de l'éternel été
Notes: Likly first French edition. Unknown printing rank (likely the first). No price on book. The cover art is not credited. Note that the typeface is unusually large (coherent with the short length of the text).