Columbia subject headings:
Harvard subject headings:
Industriegewerkschaft Metall für die Bundesrepublik Deutschland--History.
Labor unions--Germany--History--20th century
Metal-workers--Germany--Labor unions--History.
Metal-workers--Labor unions--Germany--History.
Princeton subject headings:
Industriegewerkschaft Metall für die Bundesrepublik Deutschland--History.
Labor unions--Germany--Lower Saxony--History.