Columbia subject headings:
Harvard subject headings:
Legitimacy of governments--Congresses.
Legitimacy of governments--History--Congresses.
Political science--Congresses
Power (Social sciences)--Political aspects--Congresses.
Princeton subject headings:
Legitimacy of governments--Congresses.
Legitimacy of governments--History--Congresses.
Political science--Congresses.
Power (Social sciences)--Political aspects--Congresses.