Columbia subject headings:
Harvard subject headings:
Labor and globalization--Germany--History--Congresses.
Labor movement--Germany--History--Congresses.
Labor unions--Germany--History--Congresses.
Right-wing extremists--Germany--History--Congresses.
Princeton subject headings:
Labor and globalization--Germany--History--Congresses.
Labor movement--Germany--History--Congresses.
Labor unions--Germany--History--Congresses.
Right-wing extremists--Germany--History--Congresses.