Columbia subject headings:
Europe--Economic integration--History--20th century--Sources.
Europe--Politics and government--1945---Sources.
France--Politics and government--1945---Sources.
Socialism--Europe--History--20th century--Sources.
Socialism--France--History--20th century--Sources.
Harvard subject headings:
Europe--Politics and government--20th century.
Europe--Politics and government--21st century.
Parti socialiste (France)--History.
Socialists--France--History.
Princeton subject headings: