J. Allen Hynek

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Night Siege: The Hudson Valley Ufo Sightings
Hynek, J. Allen; Imbrogno, Philip J.; Pratt, Bob

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� 0.77

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The Hynek UFO Report: The Authoritative Account of the Project Blue Book Cover-Up (MUFON)
Hynek, J. Allen

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� 3.09

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The Edge of Reality: Two Scientists Evaluate What We Know of the UFO Phenomenon (MUFON)
Hynek, J. Allen; Vallee, Jacques

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� 10.85

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The UFO Experience: Evidence Behind Close Encounters, Project Blue Book, and the Search for Answers (MUFON)
Hynek, J. Allen

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� 10.65

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Unidentified Flying Object Experience: A Scientific Inquiry
Hynek, J. Allen

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� 17.85

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The Hynek UFO Report
Hynek, J. Allen

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� 38.11

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The UFO Experience: A Scientific Inquiry
Hynek, J. Allen

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� 16.88

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Ufo Experience: A Scientific Inquiry
Hynek, Joseph Allen

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� 19.17

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