Columbia subject headings:
Harvard subject headings:
Language and education--Adriatic Sea Region--Congresses.
Language and education--Alps Region--Congresses.
Multilingualism--Adriatic Sea Region--Congresses.
Multilingualism--Alps Region--Congresses.
Sociolinguistics--Adriatic Sea Region--Congresses.
Sociolinguistics--Alps Region--Congresses.
Princeton subject headings:
Language and education--Adriatic Sea Region--Congresses.
Language and education--Alps Region--Congresses.
Multilingualism--Adriatic Sea Region--Congresses.
Multilingualism--Alps Region--Congresses.
Sociolinguistics--Adriatic Sea Region--Congresses.
Sociolinguistics--Alps Region--Congresses.