Erinnerungen an die Zukunft
Ungelöste Rätsel der Vergangenheit
Human beings, origin
Civilization, juvenile literature
Extraterrestrial influences
Progress
Archäologie
Ancient
Space flight
Civilization, ancient
Interplanetary voyages
Ancient Civilization
Curiosities and wonders
Life on other planets
Archaeology
Civilization
Nonfiction
History
The breakthrough book that was immediately recognized as a work of monumental importance when it first introduced the theory that ancient earth had established contact with aliens. This world-famous bestseller endures as proof that Earth has been visited repeatedly by advanced aliens from other w…
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