Columbia subject headings:
Architecture--France.
Harvard subject headings:
Architecture, Modern
Architecture, Modern--France.
Perret, Auguste, 1874-1954.
Perret, Gustave, 1876-
Perret, Gustave, 1876-1952.
Princeton subject headings:
Architecture, Modern--France.
Perret, Auguste, 1874-1954.
Perret, Gustave, 1876-