Unidentified flying objects

The Secret of the Saucers

Orfeo M Angelucci

The UFO mystery solved

Steuart Campbell

The World of Flying Saucers: A Scientific Examination of a Major Myth of the Space Age

Lyle Gifford Boyd, Donald Donald Howard Menzel

The biological universe

Steven J. Dick

We Met the Space People: The Story of the Mitchell Sisters

Betty Mitchell, Helen Mitchell

Final report of the scientific study of unidentified flying objects conductedby the University of Colorado under contract to the United States Air Force

Daniel S. Gillmor

Intercept--but don't shoot

Renato Vesco

UFOs

Ray Clarington, Robert Kent

Final Report of the Scientific Study of Unidentified Flying Objects

Edward U Condon, University of Colorado

The Apocalypse Troll

David Weber

The Great Flying Saucer Myth

Kelly L Segraves

Kontakt

Johannes Fiebag

Hacia una física de los OVNI

F. Aréjula

A covert agenda

Nicholas Redfern

Abductions

Edith Fiore

Aleister Crowley and the Aeon of Horus

Paul Weston

Bringing UFOs down to earth

Philip J Klass

Dark white

Jim Schnabel

Disclosure

Steven M Greer

Flying saucers over America

Gordon B Arnold, ProQuest

Gifts of the gods?

John Spencer

Jenseits von Roswell

Michael Hesemann

Of no defence significance?

John M Jenkins

Paranormal

Jack Wolfsblume