Columbia subject headings:
Harvard subject headings:
Forced labor--Germany--Völklingen--History--20th century.
Iron-works--Germany--Völklingen--History--20th century.
Röchlingschen Eisen- und Stahlwerke
Steel industry and trade--Germany--Völklingen--History--20th century.
Völklingen (Germany)--History--20th century.
Weltkulturerbe Völklinger Hütte, Europäisches Zentrum für Kunst und Industriekultur
World War, 1914-1918--Prisoners and prisons, German
World War, 1939-1945--Prisoners and prisons, German
Princeton subject headings:
Forced labor--Germany--Völklingen--History--20th century.
Iron-works--Germany--Völklingen--History--20th century.
Röchlingschen Eisen- und Stahlwerke.
Steel industry and trade--Germany--Völklingen--History--20th century.
Völklingen (Germany)--History--20th century.
Weltkulturerbe Völklinger Hütte, Europäisches Zentrum für Kunst und Industriekultur.
World War, 1914-1918--Prisoners and prisons, German.
World War, 1939-1945--Prisoners and prisons, German.