London, Rupert Hart-Davis, 1968. First Edition. First Impression. Hardback. A nice copy of an important work of science fiction. First edition, preceding the US edition of the following year. The book is square and tight with light foxing to the top edge, the jacket is faded to the spine, and a little worn to the top edge. Pringle regards it as a memorable work of art [Science Fiction the 100 Best Novels, Pringle, p133]. Cover art by Ken Reilly [8214, Hyraxia Books].