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
The Hollow Earth
Raymond Bernard
1969
The Interrupted Journey
John Grant Fuller
1966
The Omega project
Kenneth Ring
1992
The Stranger at the Pentagon
Frank E. Stranges
1967
The UFO encyclopedia
Jerome Clark
1990
The UFO enigma
Donald Howard Menzel
1977
The UFO invasion
Kendrick Frazier, Joe Nickell
1997
The UFO phenomenon
Time-Life Books
1987
The coming of Tan
Riley L. Martin, C-Qua T. Wann, O-Qua T. Wann
1995
The dark gods
Anthony Roberts
1980
The day after Roswell
Philip J. Corso, William J. Birnes
1997
The eighth tower
John A. Keel
1975
The energy grid
Bruce L. Cathie
1990
The goblin universe
F. W. Holiday
1986
The invisible college
Jacques Vallee
1975
The modern myth, ancient astronauts and UFOs
Morris Goran
1978
The uninvited
Nick Pope
1997
The watchers
Raymond E. Fowler
1990
They knew too much about flying saucers
Gray Barker
1956
Transformation
Whitley Strieber
1988
Transformer
Gregor Jansen, Mischa Kuball
2018
Tunguska
Andy Bruno
2022
UFO chronicles of the Soviet Union
Jacques Vallee
1992
UFO crash at Roswell
Kevin D. Randle
1991