Paperback
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details (United States).(see also: eBook (Kindle) · Audio CD · Audio CD)
details (Germany).(see also: Kindle Ausgabe · Kindle Ausgabe · Audible Hörbuch)
details (Canada).(see also: eBook (Kindle) · eBook (Kindle) · Audio CD)
ISBN: 978-0-14-005410-1
ISBN-10: 0-14-005410-3
Penguin · 1980