Aussaat und Kosmos
Subtitle: Spuren und Pläne ausserirdischer Intelligenzen.
By: [Bearbeitung: Wilhelm Roggersdorf]
Publisher: Econ Verlag
Published: 1972
Place of publication: Düsseldorf
Language: ger
Number of pages: 287
Subjects: Interplanetary voyages; History, Ancient; Prehistoric peoples
Notes: Bibliography: p. 269-274.