The War of Two Worlds
From Author Wars - https://authorwars.com/books/the-war-of-two-worlds-1010292.html
Overview:
- Title: The War of Two Worlds
- Author: Ed Valigursky
- Year: 1959
- Type: Cover Art
Editions/Publications:
- Unknown. Threshold of Eternity / The War of Two Worlds (Unknown, Ed Valigursky, Ace Books, $0.35, 148+108 pages, dos, Omnibus)