Columbia subject headings:
Harvard subject headings:
Competence and performance (Linguistics)
Europe--Languages.
Language and education--Europe.
Language and languages--Study and teaching--Europe--Congresses
Language policy--Europe--Congresses.
Language policy--Europe.
Languages in contact--Europe--Congresses.
Languages in contact--Europe.
Linguistic change--Europe--Congresses.
Linguistic change--Europe.
Sociolinguistics--Europe--Congresses.
Princeton subject headings:
Competence and performance (Linguistics)
Europe--Languages.
Language and education--Europe.
Language policy--Europe.
Languages in contact--Europe.
Linguistic change--Europe.