Shadow of Heaven

From Author Wars - https://authorwars.com/publications/shadow-of-heaven-422002.html

Overview:

Title: Shadow of Heaven
Author: Bob Shaw
Year: 1969
Publisher: Avon
Price: C$0.60
Pages: 175
Binding: Paperback
Type: Novel
Title Reference: Shadow of Heaven
Notes:
• "First Avon Printing, June, 1969"; no number line • "Cover illustration by Edward Soyka" on the copyright page; no visible signature on the artwork • Cover printed in the US, book in Canada