Columbia subject headings:
Harvard subject headings:
Conflict management--Europe--History--Congresses.
Culture conflict--Europe--History--Congresses.
Dispute resolution (Law)--Europe--History--Congresses.
Social conflict--Europe--History--Congresses.
Princeton subject headings:
Conflict management--Europe--History--Congresses.
Culture conflict--Europe--History--Congresses.
Dispute resolution (Law)--Europe--History--Congresses.
Social conflict--Europe--History--Congresses.