Columbia subject headings:
Architecture--Southern Cone of South America--History--Congresses.
Building materials--Southern Cone of South America--Congresses.
Glass construction--Southern Cone of South America--History--Congresses.
Harvard subject headings:
Architecture--Southern Cone of South America--History--Congresses.
Building materials--Congresses--Southern Cone of South America--Building materials--Congresses.
Glass construction--Southern Cone of South America--History--Congresses.
Princeton subject headings:
Architecture--Southern Cone of South America--History--Congresses.
Building materials--Southern Cone of South America--Congresses.
Glass construction--Southern Cone of South America--History--Congresses.