The UFO experience : a scientific Inquiry / J. Allen Hynek.

The author belives that a number of UFO siting are still to be explained.

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Bibliographic Details
Main Author:	Hynek, J. Allen (Joseph Allen), 1910-1986 (Author)
Format:	Book
Language:	English
Published:	Chicago : Henry Regnery Company, [1972]
Subjects:	Unidentified flying objects.

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