Columbia subject headings:
Architecture--France--History--19th century--Designs and plans.
Architecture--France--History--19th century.
Architecture--France--History--20th century--Designs and plans.
Architecture--France--History--20th century.
Harvard subject headings:
Architecture, Modern--19th century--France--Designs and plans.
Architecture, Modern--19th century--France--History.
Architecture, Modern--20th century--France--Designs and plans.
Architecture, Modern--20th century--France--History.
Princeton subject headings:
Architecture, Modern--19th century--France.
Architecture, Modern--20th century--France.
Architecture--France.