It seems you are looking for the French version (“pdf francais”) of the book Chronicles of the Future (often associated with the name ), sometimes titled in French as Chroniques du Futur .
Here is the essential information regarding this text and its availability in French: chronicles du futur paul dienach pdf francais
The book is presented as the diary of Paul Dienach (or Paul Amadeus Dienach), an Austrian-Greek teacher who, in 1921, allegedly fell into a coma for a year. During this time, he claimed his consciousness traveled to the year 3906 AD. The text describes a future utopian world government, advanced technology, and a new spiritual philosophy. Modern versions of the book were later compiled and edited by Achilles D. P. Panagiotou and Papahatzis . It seems you are looking for the French