by Hal Clement
Mass Market Paperback
details (USA).
(see also: Audible Audiobook)
details (United Kingdom).
(see also: eBook (Kindle) · Audible Audiobook)
details (Germany).
(see also: Kindle Ausgabe · Audible Hörbuch)
details (Canada).
(see also: Audible Audiobook)
ISBN: 978-0-345-25805-2
ISBN-10: 0-345-25805-3
Del Rey · 1977