Columbia subject headings:
Alienation (Social psychology)--History--20th century.
Civilization, Modern--20th century--Psychological aspects.
Disappointment--History--20th century.
Ideology--Psychological aspects--History--20th century.
Harvard subject headings:
Alienation (Social psychology)--History--20th century.
Civilization, Modern--20th century--Psychological aspects
Disappointment--History--20th century.
Ideology--Psychological aspects--History--20th century.
Princeton subject headings:
Disappointment.