Moon of Three Rings

From Author Wars - https://authorwars.com/publications/moon-of-three-rings-276644.html

Overview:

Title: Moon of Three Rings
Author: Andre Norton
Year: Unknown
ISBN-10: 0441541054
Publisher: Ace Books
Price: $2.50
Pages: 294
Binding: Paperback
Type: Novel
Title Reference: Moon of Three Rings
Notes:
3rd printing as per number line but is at least the 6th printing.
OCLC/WorldCat has [1983?]