Columbia subject headings:
Civilization--Philosophy.
Historians--Germany--Biography.
Spengler, Oswald, 1880-1936.
Spengler, Oswald, 1880-1936. Untergang des Abendlandes.
Harvard subject headings:
Civilization--Philosophy
Historians--Germany--Biography
Spengler, Oswald, 1880-1936.
Spengler, Oswald, 1880-1936. Untergang des Abendlandes.
Princeton subject headings: