by Hal Clement
Paperback
details (UK).
(see also: eBook (Kindle) · Audible Audiobook)
details (USA).
(see also: Audible Audiobook)
details (Germany).
(see also: Kindle Ausgabe · Audible Hörbuch)
details (Canada).
(see also: Audible Audiobook)
ISBN: 978-0-7474-0117-9
ISBN-10: 0-7474-0117-9
Penguin · 1988