The Hidden Universe (reprint)
From Author Wars - https://authorwars.com/books/the-hidden-universe-reprint-878492.html
Overview:
- Title: The Hidden Universe (reprint)
- Author: H. R. Hammond
- Year: 1939
- Type: Interior Art
Editions/Publications:
- Unknown. Science Fiction Adventure Classics, Summer 1971 (Unknown, H. R. Hammond, Ultimate Publishing Co., Inc., $0.60, 132 pages, digest, MAGAZINE)