Sirius Mystery: New Scientific Evidence for Alien Contact 5, 000 Years Ago
by Robert Temple
ISBN 13: 9780892817504
Format: Illustrated (464 pages) Publisher: Inner Traditions Bear and Company Published: 01 Oct 1998
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The UFO Enigma
by Peter A. Sturrock
ISBN 13: 9780446525657
Format: Hardcover (416 pages) Publisher: Warner Books Published: 16 May 2000 Other Format: Paperback
UFOs: The Public Deceived
by Philip J. Klass
ISBN 13: 9780879753221
Format: Paperback (310 pages) Publisher: Prometheus Books Published: 19 Jun 1986