The Spear of Mars (The Future at War, Volume 2)
by James Tiptree Jr., Kevin J. O'Donnell Jr. , Alan E. Nourse, Carl Sagan, Anthony Boucher, Poul Anderson, Orson Scott Card, Robert Sheckley, Fred...
ISBN 9780441259717 (978-0-441-25971-7)
Softcover, Ace Books, 1980
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