Columbia subject headings:
Aristocracy (Political science)--Italy--Umbria--History--Congresses.
Trinci family--History--Congresses.
Umbria (Italy)--History--Congresses.
Umbria (Italy)--Politics and government--Congresses.
Harvard subject headings:
Aristocracy (Political science)--Italy--Umbria--History--Congresses.
Trinci family--History--Congresses.
Umbria (Italy)--History--Congresses.
Umbria (Italy)--Politics and government--Congresses.
Princeton subject headings:
Aristocracy (Political science)--Italy--Umbria--History--Congresses.
Trinci family--History--Congresses.
Umbria (Italy)--History--Congresses.
Umbria (Italy)--Politics and government--Congresses.