Flame-Jewel of the Ancients / The Pirate Planet

From Author Wars - https://authorwars.com/books/flame-jewel-of-the-ancients--the-pirate-planet-1783772.html

Overview:

Title: Flame-Jewel of the Ancients / The Pirate Planet
Author: Charles Willard Diffin Edwin L. Graber
Year: 2014
Type: Omnibuses

Variant Titles:

2014. Flame-Jewel of the Ancients / The Pirate Planet