Four-Sided Triangle

From Author Wars - https://authorwars.com/publications/four-sided-triangle-258104.html

Overview:

Title: Four-Sided Triangle
Author: William F. Temple
Year: 1949
Publisher: John Long
Price: 9/6
Pages: 240
Binding: Hardcover
Type: Novel
Title Reference: Four-Sided Triangle
Notes:
- "Printed in Great Britain by the Anchor Press" on copyright page.
- No credit for jacket art, but signature "Hall" is visible, and Roger Hall is credited by sf-encyclopedia.com.