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The Edge of Reality - Two Scientists Evaluate What We Know of the UFO Phenomenon
J. Allen Hynek, Jacques Vallee
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The UFO Experience - Evidence Behind Close Encounters Project Blue Book and the Search for Answers
J. Allen Hynek
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The UFO Hotspot Compendium - All the Places to Visit Before You Die or Are Abducted
Craig Campobasso
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The UFO Abduction Book - Extraordinary Extraterrestrial Encounters of the Terrifying Kind
Brad Steiger
