Columbia subject headings:
Architecture--Europe--History--20th century--Congresses.
Architecture--United States--History--20th century--Congresses.
Classicism in architecture--Europe--Congresses.
Classicism in architecture--United States--Congresses.
Neoclassicism (Architecture)--Europe--Congresses.
Harvard subject headings:
Architecture, Modern--20th century--Europe.
Architecture--United States--History--20th century
Classicism in architecture--Europe.
Classicism in architecture--United States.
Neoclassicism (Architecture)--Europe.
Neoclassicism (Architecture)--United States.
Princeton subject headings:
Architecture, Modern--20th century--Europe.
Architecture--United States--History--20th century.
Classicism in architecture--Europe.
Classicism in architecture--United States.
Neoclassicism (Architecture)--Europe.