Columbia subject headings:
Language policy--Europe--Congresses.
Languages in contact--Europe--Congresses.
Linguistic minorities--Europe--Congresses.
Harvard subject headings:
Language and culture--Europe.
Language policy--Europe--Congresses.
Languages in contact--Europe--Congresses.
Linguistic minorities--Europe--Congresses.
Princeton subject headings:
Language policy--Europe--Congresses.
Languages in contact--Europe--Congresses.
Linguistic minorities--Europe--Congresses.