London, Gollancz, 1973. First Edition. First Impression. Hardback. A good copy. One of Clarke's best novels, winner of the Nebula Award, the Hugo Award, BSFA and a handful of others. A small chip to the jacket and a couple of other little areas of wear, price-clipped, owner's name to front endpaper. Spine tips bumped. Bookseller's label to front pastedown. Cover art by Bruce Pennington [7475, Hyraxia Books].