The Monarch of Mars / The Onslaught from Rigel

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Overview:

Title: The Monarch of Mars / The Onslaught from Rigel
Author: Fletcher Pratt, John Pollard
Year: 2017
ISBN-10: 9781612873565
Publisher: Armchair Fiction
Price: $12.95
Pages: 256
Binding: Trade Paperback
Type: Omnibus
Title Reference: The Monarch of Mars
Notes: Data from Amazon.com as of 2017-03-09. Cover art credit is for front cover. For the art on the back a mirrored version of the old Belmont pockets Invaders from Rigel by Fletcher Pratt has been used, the artist is not credited and not known, yet.