Book Condition Faint foxing to the top page edges, else fine; in a near fine, illustrated dust jacket tanned at the spine.
Edition First U.S. hardcover edition; issued by the Science Fiction Book Club. First printing with code "20 K" on page 187.
Publisher New York: Ballantine Books, (1968).
Seller ID 19462.00
Three scientists sent to the forboding planet of Nacre (inhabited by giant mushrooms, spore clouds, a dim sun, and strange one-eyed creatures) are interviewed by a unique investigator.