Hardcover
details (United States).(see also: eBook (Kindle) · Audible Audiobook · Audio Cassette)
details (UK).(see also: eBook (Kindle) · Audio Cassette)
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details (Canada).(see also: eBook (Kindle) · Audio Cassette)
ISBN: 978-0-671-68971-1
ISBN-10: 0-671-68971-1
Pocket Books · 1991