Columbia subject headings:
Constitutional history--Europe--Congresses.
Constitutional law--Europe--Congresses.
Election law--Europe--History--Congresses.
Harvard subject headings:
Constitutional history--Europe--Congresses.
Constitutional law--Europe--Congresses.
Election law--Europe--History--Congresses.
Princeton subject headings:
Constitutional history--Europe--Congresses.
Constitutional law--Europe--Congresses.
Election law--Europe--History--Congresses.