The Tombs of Kobol

From Author Wars - https://authorwars.com/publications/the-tombs-of-kobol-307480.html

Overview:

Title: The Tombs of Kobol
Author: Glen A. Larson, Robert Thurston
Year: 1980
ISBN-10: 0425049922
Publisher: Berkley Books
Price: $2.25
Pages: 215
Binding: Paperback
Type: Novel
Title Reference: The Tombs of Kobol
Notes:
Stated:
-- Berkley edition / September 1979
-- Third printing / September 1980
No number line
Cover artist credit per rear cover signature (partially obscured by text, but visible part matches The Young Warriors, next book in series).