Columbia subject headings:
Harvard subject headings:
Iron industry and trade--Germany--Völklingen--History--19th century--Exhibitions.
Iron industry and trade--Germany--Völklingen--History--20th century--Exhibitions.
Iron-works--Germany--Völklingen--History--19th century--Exhibitions.
Iron-works--Germany--Völklingen--History--19th century--Pictorial works--Exhibitions.
Iron-works--Germany--Völklingen--History--20th century--Exhibitions.
Iron-works--Germany--Völklingen--History--20th century--Pictorial works--Exhibitions.
Röchling family--History--Exhibitions.
Röchling family--History--Pictorial works--Exhibitions.
Völklinger Hütte--History--19th century--Exhibitions.
Völklinger Hütte--History--19th century--Pictorial works--Exhibitions.
Völklinger Hütte--History--20th century--Exhibitions.
Völklinger Hütte--History--20th century--Pictorial works--Exhibitions.
Princeton subject headings:
Iron industry and trade--Germany--Völklingen--History--19th century--Exhibitions.
Iron industry and trade--Germany--Völklingen--History--20th century--Exhibitions.
Iron-works--Germany--Völklingen--History--19th century--Exhibitions.
Iron-works--Germany--Völklingen--History--19th century--Pictorial works--Exhibitions.
Iron-works--Germany--Völklingen--History--20th century--Exhibitions.
Iron-works--Germany--Völklingen--History--20th century--Pictorial works--Exhibitions.
Röchling family--History--Exhibitions.
Röchling family--History--Pictorial works--Exhibitions.
Völklinger Hütte--History--19th century--Exhibitions.
Völklinger Hütte--History--19th century--Pictorial works--Exhibitions.
Völklinger Hütte--History--20th century--Exhibitions.
Völklinger Hütte--History--20th century--Pictorial works--Exhibitions.