Columbia subject headings:
Communication in politics--Iberian Peninsula--Congresses.
Iberian Peninsula--Politics and government--Congresses.
Political culture--Iberian Peninsula--Congresses.
Harvard subject headings:
Communication--Political aspects--Portugal--History--To 1500--Congresses.
Communication--Political aspects--Spain--History--To 1500--Congresses.
Political culture--Portugal--History--To 1500--Congresses.
Political culture--Spain--History--To 1500--Congresses.
Princeton subject headings: