London, Gollancz, 1978. First edition, first impression. Hardback. An excellent work of science fiction from Russia's greatest writers in the genre. Originally published in 1969, and then in 1971 in a censored version, from which this translation was taken. A fine copy with a near fine jacket. Some fading to the spine, some bumping to the spine tips. [9502, Hyraxia Books].