Columbia subject headings:
Harvard subject headings:
Baden (Germany)--History--Sources.
Labor movement--Germany--Baden--History--Sources.
Labor movement--Germany--Bavaria--History.
Labor unions--Germany--Baden--History--Sources.
Labor unions--Germany--Bavaria--History.
Working class--Germany--Baden--History--Sources.
Working class--Germany--Bavaria--History.
Princeton subject headings:
Labor movement--Germany--Bavaria--History.
Labor unions--Germany--Bavaria--History.
Working class--Germany--Bavaria--History.