Columbia subject headings:
Harvard subject headings:
Architecture, Modern
Architecture--Africa.
Architecture--Brazil
Architecture--Portugal
Princeton subject headings:
Architecture--Africa, Portuguese-speaking--History--19th century--Congresses.
Architecture--Africa, Portuguese-speaking--History--20th century--Congresses.
Architecture--Brazil--History--19th century--Congresses.
Architecture--Brazil--History--20th century--Congresses.
Architecture--Portugal--History--19th century--Congresses.
Architecture--Portugal--History--20th century--Congresses.