Columbia subject headings:
Harvard subject headings:
Europe--Civilization--21st century--Congresses.
Group identity--Europe--Congresses--21st century.
National characteristics, European--Congresses--21st century.
Nationalism--Europe--Congresses--21st century.
Princeton subject headings:
Europe--Civilization--21st century--Congresses.
Group identity--Europe--Congresses--21st century.
National characteristics, European--Congresses--21st century.
Nationalism--Europe--Congresses--21st century.