Columbia subject headings:
Communists--France--History--20th century.
Parti communiste français--History--20th century.
Harvard subject headings:
Communists--France--History--20th century.
Communists--France--History--21st century.
Parti communiste français--History--20th century.
Parti communiste français--History--21st century.
Princeton subject headings:
Communists--France--History--20th century.
Communists--France--History--21st century.
Parti communiste français--History--20th century.
Parti communiste français--History--21st century.