by John A. Keel
Paperback
details (USA).
(see also: eBook (Kindle) · Audible Audiobook)
details (UK).
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details (Germany).
(see also: Kindle Ausgabe · Audible Hörbuch)
details (Canada).
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ISBN: 978-0-9626534-6-9
ISBN-10: 0-9626534-6-2
Illuminet Press · 1996