UFOs: The Definitive Casebook
by John Spencer
ISBN 13: 9780600572237
Format: Hardcover (192 pages) Publisher: Hamlyn Published: Apr 1991
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The Ufo Report 1990 (Unidentified Flying Object Report)
by Timothy Good
ISBN 13: 9780283998485
Format: Paperback (192 pages) Publisher: Sidgwick & Jackson Published: 16 Nov 1989
The Alien IQ Test: Are We up to the Challenge?
by Clifford A. Pickover
ISBN 13: 9780465001101
Format: Paperback (128 pages) Publisher: Basic Books Published: 10 Jun 1997
Phantoms of the Sky: UFOs - A Modern Myth?
by David Clarke, Andy Roberts
ISBN 13: 9780709040866
Format: Hardcover (192 pages) Publisher: Robert Hale Ltd Published: 31 Jul 1990
Aliens (Marvels & Mysteries S.)
by Anon
ISBN 13: 9780752512174
Format: Paperback (112 pages) Publisher: Parragon Plus Published: Dec 1996
A Covert Agenda: British Government's UFO Top Secrets Exposed
by Nicholas Redfern
ISBN 13: 9780671005320
Format: Paperback (368 pages) Publisher: Pocket Books Published: 01 Apr 1998 Other Format: Special Edition
The FBI Files: FBI's UFO Top Secrets Exposed
ISBN 13: 9780684819389
Format: Hardcover (464 pages) Publisher: Simon & Schuster Ltd Published: 06 Apr 1998 Other Format: Paperback
UFO Phenomenon (Mysteries of the unknown)
by the editors of Time-Life Books, of Time-Life Books
ISBN 13: 9780809463244
Format: Hardcover (160 pages) Publisher: Time Life UK Published: 28 Oct 1993
Science of Aliens
by Jack Challoner
ISBN 13: 9783791334851
Format: Paperback (128 pages) Publisher: Prestel Publishing Ltd Published: 12 Oct 2005
UFOs and How to See Them
by Jenny Randles
ISBN 13: 9781860192050
Format: Hardcover (144 pages) Publisher: Caxton Editions Published: 01 Jan 1997 Other Format: Hardcover
Alchemy of Nine Dimensions: Decoding the Vertical Axis, Crop Circles, and the Mayan Calendar
by Barbara Hand Clow, Gerry Clow
ISBN 13: 9781571744203
Format: Paperback (384 pages) Publisher: Hampton Roads Publishing Co Published: Sep 2004
The Alien Files: The Secrets of Extraterrestrial Encounters and Abductions
by Gregory Van Dyk
ISBN 13: 9781862043176
Format: Paperback (224 pages) Publisher: Element Books Published: 04 Jun 1998