Ovni, análisis de un contacto
Subtitle: documentos y mensajes secretos
By: V. Zalbidea, J. Lizar.
Contributors: Lizar, J., joint author.
Edition: 1. ed.
Series: Universo paralelo ; v. 2
Publisher: Tropos
Published: 1975
Place of publication: Madrid
Language: spa
Number of pages: 163
Subjects: Unidentified flying objects.
Notes: Bibliography: p. 157.