Columbia subject headings:
Harvard subject headings:
Rhein-Neckar-Kreis (Germany)--History--20th century--Exhibitions.
World War, 1914-1918--Germany--Rhein-Neckar-Kreis--Exhibitions.
Princeton subject headings:
Metropolregion Rhein-Neckar (Germany)--History--20th century--Exhibitions.
World War, 1914-1918--Germany--Metropolregion Rhein-Neckar--Exhibitions.