Columbia subject headings:
Harvard subject headings:
Europe--Emigration and immigration.
Immigrants--Cultural assimilation--Europe.
Multiculturalism--Europe
Social integration--Europe.
Princeton subject headings:
Assimilation (Sociology)--European Union countries.
European Union countries--Ethnic relations.
Immigrants--European Union countries--Cultural assimiation.
Multiculturalism--European Union countries.
Social integration--European Union countries.