New York: Ballantine Books, 1964. First Edition. The author's second Hugo Award-winning novel (1965), about an inhabited planet that wanders into Earth's solar system. Item #2089
First Printing, a paperback original novel (U6010). Octavo; illustrated wrappers; yellow-orange edge-staining; 318, pp. Some pinpoint wear to extremities, with a tiny ownership label to verso of front wrapper, else a Fine, unread copy.