Columbia subject headings:
Europe--Politics and government--Congresses.
Legislative bodies--Europe--Congresses.
Legislative bodies--Europe--History--Congresses.
Legislators--Europe--History--Congresses.
Harvard subject headings:
Communication in politics--Europe--History--Congresses.
Europe--Politics and government--Congresses.
Legislative bodies--Europe--Congresses.
Legislative bodies--Europe--History--Congresses.
Legislators--Europe--History--Congresses.
Parliamentary practice--Europe--History--Congresses.
Princeton subject headings:
Communication in politics--Europe--History--Congresses.
Legislative bodies--Europe--History--Congresses.
Parliamentary practice--Europe--History--Congresses.