Les démons de Gree

From Author Wars - https://authorwars.com/books/les-demons-de-gree-1496670.html

Overview:

Title: Les démons de Gree
Author: C. C. MacApp
Year: 1969
Type: Short Fiction

Editions/Publications:

Unknown. Galaxie (2ème série), #62 (Unknown, C. C. MacApp, OPTA, F3.00, 164 pages, digest, MAGAZINE)