Mysteries of the universe
By: by Roy Stemman.
Edition: New enlarged ed.
Series: Great mysteries
Publisher: Aldus Books
Published: 1978
Place of publication: London
Language: eng
Number of pages: 256
Subjects: Astronomy -- Miscellanea.; Unidentified flying objects -- Miscellanea.
Notes: Originally published in 1976 under title: Visitors from outer space.
Includes index.