Title: Unsolved UFO mysteries
Subtitle: the world's most compelling cases of alien encounter
Description: Focusing on unsolved sightings of UFOs and encounters by people in a variety of situations, the authors combine their files to present a number of baffling UFO situations that remain unexplained by conventional science.
Subjects: Current Events, Unidentified flying objects, Sightings and encounters, Human-alien encounters, Nonfiction, Unidentified flying objects, sightings and encounters, Unidentified flying objects -- Sightings and encounters