Les tueurs de temps

From Author Wars - https://authorwars.com/publications/les-tueurs-de-temps-335388.html

Overview:

Title: Les tueurs de temps
Author: Gérard Klein
Year: 1980
ISBN-10: 2266009346
Publisher: Presses Pocket
Pages: 213
Binding: Paperback
Type: Novel
Title Reference: Les tueurs de temps
Notes: Probable first printing. No price on book. Note that the title page indicates "Robert Laffont" as the publisher (it corresponds to the 1974 tp) and that Gilles d'Argyre (one of Klein's pseudonym) is given as an author in parenthesis.