Columbia subject headings:
Rhineland (Germany)--Economic conditions--20th century.
Rhineland (Germany)--History--20th century.
Ruhr (Germany : Region)--Economic conditions--20th century.
Ruhr (Germany : Region)--History--20th century.
World War, 1914-1918--Reparations.
Harvard subject headings:
Rhineland (Germany)--Economic conditions--20th century.
Rhineland (Germany)--History--20th century.
Ruhr (Germany : Region)--Economic conditions--20th century.
Ruhr (Germany : Region)--History--French occupation, 1923-1925
World War, 1914-1918--Reparations
Princeton subject headings:
Rhineland (Germany)--Economic conditions--20th century.
Rhineland (Germany)--History--20th century.
Ruhr (Germany : Region)--Economic conditions--20th century.
Ruhr (Germany : Region)--History--20th century.
World War, 1914-1918--Reparations.