J. Allen Hynek

Rencontres du troisième type (1977)

Rencontres du troisième type (1977)

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UFO's Are Here! (1977)

UFO's Are Here! (1977)

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The Phenomenon (2020)

The Phenomenon (2020)

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Out of the Blue - The Definitive Investigation of the UFO Phenomenon (2003)

Out of the Blue - The Definitive Investigation of the UFO Phenomenon (2003)

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The UFO Experience (1982)

The UFO Experience (1982)

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UFOs: 50 Years of Denial? (1997)

UFOs: 50 Years of Denial? (1997)

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