Columbia subject headings:
Harvard subject headings:
Argentina--History--Congresses.
Buenos Aires (Argentina)--History--Congresses.
Latin America--History--Congresses.
Princeton subject headings:
Argentina--History--Congresses.
Buenos Aires (Argentina)--Centennial celebrations, etc.--Congresses.
Buenos Aires (Argentina)--History--Congresses.
Cities and towns--Latin America--History--Congresses.
Urbanization--Latin America--History--Congresses.