Columbia subject headings:
Allgemeiner Deutscher Gewerkschaftsbund--History.
Industrial relations--Germany--History.
Labor unions--Germany--History.
Working class--Germany--History.
Harvard subject headings:
Deutscher Gewerkschaftsbund.
Labor unions--Germany (West)--History
Labor unions--Germany--History
Princeton subject headings:
Labor unions--Germany (West)--History.
Labor unions--Germany--History.