Columbia subject headings:
Aristocracy (Political science)--Congresses.
Elite (Social sciences)--Congresses.
Nobility--History--Congresses.
Power (Social sciences)--Congresses.
Harvard subject headings:
Aristocracy (Political science)--Congresses.
Elite (Social sciences)--Congresses.
Nobility--History--Congresses.
Power (Social sciences)--Congresses
Princeton subject headings: