Columbia subject headings:
Political parties--France--History.
Right and left (Political science)
Socialism--France--History.
Harvard subject headings:
Political parties--France--History.
Right and left (Political science)
Socialism--France
Socialism--France--History
Princeton subject headings:
Communism--France--History.
France--Politics and government--19th century.
France--Politics and government--20th century.
Socialism--France--History.