Columbia subject headings:
Harvard subject headings:
Borderlands--European Union countries.
Ethnicity--Europe, Eastern.
Ethnicity--European Union countries.
Europe, Eastern--Relations--European Union countries.
European Union countries--Boundaries.
European Union countries--Cultural policy.
European Union countries--Relations--Europe, Eastern.
Social integration--European Union countries.
Princeton subject headings:
Borderlands--European Union countries.
European Union countries--Cultural policy.