Columbia subject headings:
Harvard subject headings:
Industriegewerkschaft Metall für die Bundesrepublik Deutschland--History.
Metal-workers--Labor unions--Germany--Oberschwaben--History.
Metal-workers--Labor unions--Germany--Oberschwaben--Political activity--History.
Metal-workers--Labor unions--Germany--Swabia--History.
Oberschwaben (Germany)--History.
Princeton subject headings:
Metal-workers--Labor unions--Germany--Oberschwaben--History.
Metal-workers--Labor unions--Germany--Oberschwaben--Political activity--History.
Oberschwaben (Germany)--History.