London, Weidenfeld & Nicolson, 1951. First Edition. First Impression. Hardback. A very good copy. First UK edition. A milestone of science fiction. One of the foundational works of modern science fiction (excuse the pun). A little light wear to the jacket edges, spine tips bumped, short tear to front corner, some rubbing to the edges. A couple of short tears. 40mm tear to front flap. [8284, Hyraxia Books].