Publisher: Dell, No. C111, 1960, 350 pgs.Mass Market Paperback in good+ condition. Stated First Edition witha solid binding and a clean text. Wear to the covers and edges, spine creasing with some slight discoloration to the covers. Clifford D. Simak, Katherine MacLean, Judith Merril, Isaac Asimov, Damon Knight, Algis Budrys
