Columbia subject headings:
Latin America--History--Congresses.
Portugal--History--Congresses.
Spain--History--Congresses.
Harvard subject headings:
History--Methodology--Congresses
Latin America--History--Congresses.
Portugal--History--Congresses.
Spain--History--Congresses.
Princeton subject headings:
Latin America--History--Congresses.
Portugal--History--Congresses.
Spain--History--Congresses.