Columbia subject headings:
Architecture--France--Paris--History--20th century.
Architecture--France--Paris.
Paris (France)--Buildings, structures, etc.
Harvard subject headings:
Architecture, Modern--20th century--France--Paris.
Architecture--France--Paris
Paris (France)--Buildings, structures, etc.
Princeton subject headings:
Architecture, Modern--20th century--France--Paris.
Architecture--France--Paris.
Paris (France)--Buildings, structures, etc.