Columbia subject headings:
Harvard subject headings:
Education, Bilingual--European Union countries.
Language and languages--Study and teaching--European Union countries.
Language policy--European Union countries.
Multilingualism--European Union countries.
Princeton subject headings:
Education, Bilingual--European Union countries.
Language and languages--Study and teaching--European Union countries.
Language policy--European Union countries.
Multilingualism--European Union countries.