Columbia subject headings:
Anarchism--History.
Communism--History.
Political culture--History.
Utopian socialism--History.
Harvard subject headings:
Anarchism--History
Communism--History
Political culture--History.
Utopian socialism--History.
Princeton subject headings:
Anarchism--History.
Communism--History.
Socialism--History.
Working class--Political activity--History.