Subject heading
Unidentified flying objects
224 books carry this heading. It is a source-library term, kept as recorded; related traditions and headings below are drawn from co-occurrence, not editorial judgment.
Related traditions
Related subjects
- Sightings and encounters86
- Alien abduction30
- Human-alien encounters28
- Unidentified flying objects, sightings and encounters26
- History25
- Text21
- Life on other planets19
- Ovnis18
- Parapsychology18
- United States18
- Non-fiction literature17
- UFO17
- Curiosities and wonders16
- Ufon15
- Extraterrestrial beings10
- Fiction10
- Religious aspects10
- occultism10
- Observations et rencontres9
- Flying saucers8
Books
Open in Browse224 books
Era
UFO exist!
Paris Flammonde
1976
UFO sightings desk reference
Cheryl Costa, Linda Miller Costa
2017
UFO's In Space
Jacques Vallee
1977
UFOs
Michael Hesemann
1998
UFOs
Leslie Kean
2010
UFOs Past, Present & Future
Robert Emenegger
1974
UFOs, chemtrails, and aliens
Donald R. Prothero
2017
Unexplained!
Jerome Clark
1993
Visitors from outer space
Roy Stemman
1976
Walking among Us
David M. Jacobs
2015
Weird America
Jim Brandon
1978
The truth about flying saucers
Aimé Michel
1957
100.000 kilómetros tras los ovnis
J. J. Benítez
1978Spanish
De Lafayette Mega Encyclopedia of Anunnaki, Ulema-Anunnaki, Their Offspring, Their Remnants And Extraterrestrial Civilization on Earth
Maximillien De Lafayette
2010
La Gran Oleada
J. J. Benítez
1982Spanish
Las abducciones, ¡vaya timo!
Luis R. Gonzalez
2008Spanish
Los Visitantes
J. J. Benítez
1982Spanish
Operation Thunder Child
Nick Pope
2000
Ricky B.
J. J. Benítez
1997Spanish
Spooksville - Aliens in the Sky
Christopher Pike
1996
Three Minutes in June
Bruce Maccabee
2017
Atlas of unidentified flying objects
Andy McGrillen
2025
Black is beautiful
Peter S. Ruckman
1995
Flying saucer occupants
Coral E. Lorenzen
1967