Columbia subject headings:
Architecture, Modern--20th century--Conservation and restoration--Congresses.
International style (Architecture)--Congresses.
Modern movement (Architecture)--Congresses.
Harvard subject headings:
Architecture, Modern--20th century--Conservation and restoration--Congresses.
International style (Architecture)--Congresses.
Modern movement (Architecture)--Congresses.
Princeton subject headings:
Architecture, Modern--20th century--Conservation and restoration--Congresses.
International style (Architecture)--Congresses.
Modern movement (Architecture)--Congresses.