Columbia subject headings:
Harvard subject headings:
Howaldtswerke-Deutsche Werft AG--History.
Shipbuilding industry--Germany--Düsseldorf--History.
Shipbuilding--Germany--Düsseldorf--History.
ThyssenKrupp Marine Systems--History.
Princeton subject headings:
Howaldtswerke-Deutsche Werft AG--History.
Shipbuilding industry--Germany--Düsseldorf--History.
Shipbuilding--Germany--Düsseldorf--History.
Thyssen Krupp AG--History.