Columbia subject headings:
Language and culture--Congresses.
Russian language--Congresses.
Sociolinguistics--Congresses.
Harvard subject headings:
Language and culture--Congresses.
Russian language--Congresses.
Sociolinguistics--Congresses.
Princeton subject headings:
Anthropological linguistics--Congresses.
Ethnicity--Congresses.
Language and culture--Congresses.