Paperback
details (UK).
(see also: Audible Audiobook · eBook (Kindle) · Audio Cassette)
details (USA).
(see also: Audible Audiobook · eBook (Kindle))
details (Germany).
(see also: Kindle Ausgabe · Audible Hörbuch)
details (Canada).
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ISBN: 978-0-340-32889-7
ISBN-10: 0-340-32889-4
Hodder Children's Books · 1985