London, Gollancz, 1973. First edition, first impression. Hardback. A very good copy in a near fine jacket. One of Clarke's best novels, winner of the Nebula Award, the Hugo Award, BSFA and a handful of others. Block a touch foxed to the top edge, price-clipped with a little rolling to the spine tips. A nice copy. Cover art by Bruce Pennington [9234, Hyraxia Books].