Columbia subject headings:
War and civilization.
War and society.
Harvard subject headings:
Europe--Intellectual life--20th century.
Liberalism--History--20th century.
Philosophy, German--19th century.
Philosophy, German--20th century.
War and civilization.
War and society
World politics--20th century
Princeton subject headings:
Europe--Intellectual life--20th century.
Liberalism--History--20th century.
Philosophy, German--19th century.
Philosophy, German--20th century.
World politics--20th century.