This Fortress World

From Author Wars - https://authorwars.com/publications/this-fortress-world-262536.html

Overview:

Title: This Fortress World
Author: James Gunn
Year: 1977
ISBN-10: 0722141459
Publisher: Sphere Books
Price: £0.65
Pages: 192
Binding: Paperback
Type: Novel
Title Reference: This Fortress World
Notes:
"Copyright © 1955 by James E. Gunn" "Published in Great Britain by Sphere Books Ltd 1977" Month from amazon.uk Printing not stated, no number line The artist is not credited, no visible signature on the artwork Cover art credited on page 46 of Cowley's "Great Space Battles" UK 65p, Australia $2.20; New Zealand $2.25; Rep. of Ireland 71½; Malta 70c