Columbia subject headings:
Democracy--Europe--Congresses.
Europe--Emigration and immigration--Government policy--Congresses.
Immigrants--Cultural assimilation--Europe--Congresses.
Multiculturalism--Europe--Congresses.
Harvard subject headings:
Cultural pluralism--Europe--Congresses.
Europe--Emigration and immigration--Congresses.
Europe--Ethnic relations--Congresses.
Minorities--Europe--Congresses
Multiculturalism--Europe--Congresses
Social integration--Europe--Congresses.
Princeton subject headings: