Visitors from outer space
By: by Roy Stemman.
Series: A New library of the supernatural
Publisher: Doubleday
Published: 1976
Place of publication: Garden City, N.Y
Language: eng
Number of pages: 144
Subjects: Unidentified flying objects.; Interplanetary voyages.
Notes: New enl. ed. published in 1978 under title: Mysteries of the universe.