Columbia subject headings:
Harvard subject headings:
Collective labor agreements--Electric industries--Germany--History--21st century.
Collective labor agreements--Metal industry--Germany--History--21st century.
Electric industries--Labor unions--Germany--History--21st century.
Metal trade--Labor unions--Germany--History--21st century.
Wages--Electric industry workers--Germany--History--21st century.
Wages--Metal-workers--Germany--History--21st century.
Princeton subject headings:
Collective labor agreements--Electric industries--Germany--History--21st century.
Collective labor agreements--Metal industry--Germany--History--21st century.
Metal trade--Labor unions--Germany--History--21st century.
Wages--Electric industry workers--Germany--History--21st century.
Wages--Metal-workers--Germany--History--21st century.