Subject heading
Unidentified flying objects
208 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 encounters79
- Alien abduction30
- Human-alien encounters27
- Unidentified flying objects, sightings and encounters26
- History24
- Text21
- Life on other planets19
- Ovnis18
- Parapsychology18
- United States18
- Non-fiction literature17
- UFO17
- Curiosities and wonders15
- Ufon15
- Extraterrestrial beings10
- Occultism10
- Fiction9
- Observations et rencontres9
- Flying saucers8
- Government policy8
Books
Open in Browse208 books
Era
I visited Ganymede
Yosip Ibrahim
1996
Identified flying objects
Michael Paul Masters
2019
The UFO chronicles
John Michael Greer
2020
Why UFOs
John A. Keel
1970
UFO crash at Roswell
Benson Saler, Charles Charles Albert Ziegler, Charles B Moore
1997
Beyond top secret
Timothy Good
1996
The ancient visitors
Daniel Cohen
1976
O livro vermelho dos discos voadores
Flavio Augusto Pereira
1966Portuguese
Platillos voladores sobre Venezuela
Horacio González Ganteaume
1961Spanish
The matrix
Valdamar Valerian
1992
Choose Your Own Adventure - Project UFO
R. A. Montgomery
1994
Close Encounters
Carolyn Keene
2006
The flying saucer mystery
Carolyn Keene
1980
UFOs
Rupert Matthews
1997
UFOs
Jack DeMolay
2006
UFOs
Gary Jeffrey
2005
Unsolved extraterrestrial mysteries
David Southwell
2007
De flygande tefaten
Frank Scully
1951Swedish
The UFO mystery solved
Steuart Campbell
1994
The biological universe
Steven J. Dick
1996
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
1969
Intercept--but don't shoot
Renato Vesco
1971
UFOs
Ray Clarington, Robert Kent
2015
Kontakt
Johannes Fiebag
1994German