Columbia subject headings:
Harvard subject headings:
Labor unions and communism--France--Hérault--History--20th century.
Labor unions--France--Hérault--Political activity--History--20th century.
Labor unions--Political activity--France--Hérault--History--20th century.
Princeton subject headings:
Hérault (France)--Politics and government.
Labor unions--France--Languedoc--Political activity--History.
Languedoc (France)--Politics and government.
Working class--France--Languedoc--Political activity--History.