Columbia subject headings:
Paris (France)--History--1914-1918.
World War, 1914-1918--Economic aspects--France.
World War, 1914-1918--France--Paris.
Harvard subject headings:
Paris (France)--Economic conditions.
World War, 1914-1918--Economic aspects--France
World War, 1914-1918--France--Paris
Princeton subject headings:
Paris (France)--Economic conditions.
World War, 1914-1918--France--Paris.