Le mystère des O.V.N.I.
Subtitle: fantastiques contacts extra-terrestres
By: R. Jack Perrin.
Series: Univers insolite
Publisher: Éditions Pygmalion
Published: 1976
Place of publication: Paris
Language: fre
Number of pages: 385
Subjects: Unidentified flying objects.
Notes: Bibliography: p. 381-386.