Columbia subject headings:
Harvard subject headings:
Alps Region--Ethnic relations--Congresses.
Cultural pluralism--Alps Region--Congresses.
Multilingualism--Alps Region--Congresses.
Sociolinguistics--Alps Region--Congresses.
Princeton subject headings:
Aosta (Italy)--Languages.
Linguistic minorities--Switzerland.
Multilingualism--Switzerland.
Raeto-Romance language--Dialects--Switzerland.
Raeto-Romance language--Dialects.
Sociolinguistics--Switzerland.
South Tirol (Austria)--Languages.
Valais (Switzerland)--Languages.