Columbia subject headings:
Legislators--Europe--History--19th century--Congresses.
Legislators--Europe--History--20th century--Congresses.
Parliamentary practice--Europe--History--19th century--Congresses.
Parliamentary practice--Europe--History--20th century--Congresses.
Policy sciences--Europe--History--19th century--Congresses.
Policy sciences--Europe--History--20th century--Congresses.
Harvard subject headings:
Legislators--Europe--History--19th century--Congresses.
Legislators--Europe--History--20th century--Congresses.
Parliamentary practice--Europe--History--19th century--Congresses.
Parliamentary practice--Europe--History--20th century--Congresses.
Policy sciences--Europe--History--19th century--Congresses.
Policy sciences--Europe--History--20th century--Congresses.
Princeton subject headings:
Legislators--Europe--History--19th century--Congresses.
Legislators--Europe--History--20th century--Congresses.
Parliamentary practice--Europe--History--19th century--Congresses.
Parliamentary practice--Europe--History--20th century--Congresses.
Policy sciences--Europe--History--19th century--Congresses.
Policy sciences--Europe--History--20th century--Congresses.