Columbia subject headings:
Harvard subject headings:
Astronautics--History
Biographies
Däniken, Erich von, 1935-
Historians--Switzerland--Biography
Parapsychologists--Switzerland--Biography.
Parapsychology--History
Princeton subject headings:
Astronautics--History.
Biographies.
Däniken, Erich von, 1935-
Historians--Switzerland--Biography.
Parapsychologists--Switzerland--Biography.
Parapsychology--History.