Columbia subject headings:
Harvard subject headings:
Cables, Submarine--Germany--Nordenham--History.
Electric industry workers--Germany--Nordenham--History.
Group identity--Germany--Nordenham--History.
Norddeutsche Seekabelwerke--History.
Princeton subject headings:
Cables, Submarine--Germany--Nordenham--History.
Electric industry workers--Germany--Nordenham--History.
Group identity--Germany--Nordenham--History.
Norddeutsche Seekabelwerke--History.