Columbia subject headings:
Conflict management--International cooperation--History--20th century.
Liberalism--History--20th century.
Peace-building--History--20th century.
Reconciliation--History--20th century.
Harvard subject headings:
Conflict management--International cooperation--History--20th century.
Liberalism--History--20th century.
Peace-building--History--20th century.
Reconciliation--History--20th century.
Princeton subject headings:
Conflict management--International cooperation--History--20th century.
Liberalism--History--20th century.
Peace-building--History--20th century.
Reconciliation--History--20th century.