by Hal Clement
Paperback
details (United States).
(see also: Audible Audiobook)
details (UK).
(see also: Audible Audiobook · eBook (Kindle))
details (Germany).
(see also: Kindle Ausgabe · Audible Hörbuch)
details (Canada).
(see also: Audible Audiobook)
ISBN: 978-0-380-00635-9
ISBN-10: 0-380-00635-9
Avon · 1976