Columbia subject headings:
Europe, Southern--History--Congresses.
Kings and rulers, Medieval--Congresses.
Mediterranean Region--History--476-1517--Congresses.
Power (Social sciences)--Europe, Southern--History--To 1500--Congresses.
Power (Social sciences)--Mediterranean Region--History--To 1500--Congresses.
Harvard subject headings:
Europe, Southern--History--Congresses.
Kings and rulers, Medieval--Congresses.
Mediterranean Region--History--476-1517--Congresses.
Power (Social sciences)--Europe, Southern--History--To 1500--Congresses.
Power (Social sciences)--Mediterranean Region--History--To 1500--Congresses.
Princeton subject headings:
Europe, Southern--History--Congresses.
Kings and rulers, Medieval--Congresses.
Mediterranean Region--History--476-1517--Congresses.
Power (Social sciences)--Europe, Southern--History--To 1500--Congresses.
Power (Social sciences)--Mediterranean Region--History--To 1500--Congresses.