Columbia subject headings:
Harvard subject headings:
Constitutional history--Europe--Congresses.
Constitutional history--European Union countries--Congresses.
Constitutional history--Germany--Congresses.
Constitutional law--Congresses
Constitutional law--Germany--States--Congresses.
Princeton subject headings:
Constitutional courts--Europe--Congresses.
Constitutional history--Europe--Congresses.
Constitutional law--Europe--Congresses.
Judicial review--Europe--Congresses.
State, The--History--Congresses.