Air Force Regulation 190-6
Sections below
Web Resources
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Book References
For discussion see the following:
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Discussion by:
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Hynek, J Allen in his “The Hynek UFO Report” (1977) (available on Amazon USA and on Amazon UK) at page 41 (in Chapter 3) of the Barnes & Noble hardback reprint (1997), at page 51 of the Dell paperback edition (with the same page numbering in the Sphere paperback edition). |
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Other Material