Columbia subject headings:
Labor unions--France--Doubs (Department)--History--20th century.
Social movements--France--Doubs (Department)--History--20th century.
Working class--France--Doubs (Department)--History--20th century.
Harvard subject headings:
Labor unions--France--Doubs (Department)--History--20th century.
Social movements--France--Doubs (Department)--History--20th century.
Working class--France--Doubs (Department)--History--20th century.
Princeton subject headings:
Labor unions--France--Doubs (Department)--History--20th century.
Social movements--France--Doubs (Department)--History--20th century.
Working class--France--Doubs (Department)--History--20th century.