On Earth and in the Sky
From Author Wars - https://authorwars.com/books/on-earth-and-in-the-sky-103581.html
Editions/Publications:
- Unknown. On Earth and in the Sky (Unknown, Willy Ley, Doubleday, $4.95, 249 pages, Hardcover, Non-fiction)
- Unknown. On Earth and in the Sky (Unknown, Willy Ley, Ace Star, $0.60, 192 pages, Paperback, Non-fiction)