Columbia subject headings:
Harvard subject headings:
Architecture, Modern--20th century--Conservation and restoration--Congresses.
Architecture, Modern--20th century--France--Conservation and restoration--Congresses.
Le Corbusier, 1887-1965--Congresses.
Princeton subject headings:
Architecture--France--Conservation and restoration--Congresses.
Concrete construction--France--Conservation and restoration--Congresses.
Le Corbusier, 1887-1965--Criticism and interpretation--Congresses.