Columbia subject headings:
Harvard subject headings:
Christian democracy--Europe, Western--History--20th century--Congresses.
Conservatism--Europe, Western--History--20th century--Congresses.
Europe, Western--Politics and government--20th century--Congresses.
Left-wing extremists--Europe, Western--History--20th century--Congresses.
Nineteen seventies--Political aspects--Europe, Western--Congresses.
Right-wing extremists--Europe, Western--History--20th century--Congresses.
Princeton subject headings:
Christian democracy--Europe, Western--History--20th century--Congresses.
Conservatism--Europe, Western--History--20th century--Congresses.
Europe, Western--Politics and government--20th century--Congresses.
Left-wing extremists--Europe, Western--History--20th century--Congresses.
Nineteen seventies--Political aspects--Europe, Western--Congresses.
Right-wing extremists--Europe, Western--History--20th century--Congresses.