Operation: Gravity (Introduction)
From Author Wars - https://authorwars.com/books/operation-gravity-introduction-1182073.html
Overview:
- Title: Operation: Gravity (Introduction)
- Author: Jack Williamson
- Year: 1971
- Type: Essays
Editions/Publications:
- Unknown. People Machines (Unknown, Jack Williamson, Ace Books, $0.75, 189 pages, Paperback, Collection)