Columbia subject headings:
Architecture--History--Congresses.
Building--History--Congresses.
Structural design--History--Congresses.
Structural engineering--History--Congresses.
Harvard subject headings:
Architecture--History--Congresses.
Building--History--Congresses.
Structural design--History--Congresses.
Structural engineering--History--Congresses.
Princeton subject headings:
Architecture--History--Congresses.
Building--History--Congresses.
Structural design--History--Congresses.
Structural engineering--History--Congresses.