Columbia subject headings:
Bridges--Design and construction--Congresses.
Brooklyn Bridge (New York, N.Y.)--Congresses.
Technology--Social aspects--Congresses.
Harvard subject headings:
Bridges--Design and construction--Congresses
Brooklyn Bridge (New York, N.Y.)--Congresses.
Technology--Social aspects--Congresses
Princeton subject headings:
Bridges--Design and construction--Congresses.
Brooklyn Bridge (New York, N.Y.)--Congresses.
Technology--Social aspects--Congresses.