THE UFO ENIGMA - Books & DVDs (with The UFO Enigma in Title)
The UFO Enigma - J & J Vallee
The UFO Enigma - Peter A. Sturrock
UFO Enigma : A New Review of the Physical Evidence - Peter A. Sturrock
The UFO Enigma : The Definitive Explanation of the Ufo Phenomenon - Donald H. Menzel
Challenge to Science, The UFO Enigma - Jacques Vallee, Janine Vallee
Science Meets the UFO Enigma - Desmond Bragg and Paul Joslin
Earth Lights : Towards an Understanding of the UFO Enigma - Paul Devereux
UFOs : A Scientific Enigma - D.A.J. Seargent
UFOs : The Continuing Enigma - Reader's Digest
The UFO Enigma (DVD) - Bill Knell
, EBAY