Forschung in Fesseln
Subtitle: das Rätsel d. Elektro-Gravitation
By: von Rho Sigma.
Publisher: Ventla-Verl.
Published: 1972
Place of publication: Wiesbaden-Schierstein
Language: ger
Number of pages: 272
Subjects: Unidentified flying objects.
Notes: Bibliography: p. 259-266.