Published by Ace, 1970; no ISBN; Ace #95961; 221 pages; 4.1 x 7.0 inches; paperback. Cover by Jeff Jones. I've seen, and had the opportunity to purchase, the original painting for this cover.
The Zero Stone, US, 1970 pb
Andre Norton Books
My Personal Collection.
Copyright 2007-2026 by Mike Grimm; cover images are copyrighted by their respective owners, are used here for illustrative purposes only, and are scans of my copies.