Columbia subject headings:
Harvard subject headings:
Industrial relations--Germany--History--20th century.
Industrial relations--Germany--History--21st century.
Industriegewerkschaft Metall für die Bundesrepublik Deutschland--History.
Industriegewerkschaft Metall für die Bundesrepublik Deutschland.
Labor unions--Germany--History--20th century
Labor unions--Germany--History--21st century.
Labor unions--Germany--Oficials and employees--Biography.
Metal-workers--Labor unions--Germany--History.
Social justice--Germany--History--20th century.
Social justice--Germany--History--21st century.
Wetzel, Detlef.
Princeton subject headings:
Industriegewerkschaft Metall für die Bundesrepublik Deutschland.
Wetzel, Detlef.