Columbia subject headings:
Ethnology--Russia (Federation)--Ural Mountains Region.
Harvard subject headings:
Ethnology--Russia (Federation)--Ural Mountains Region.
Ethnology--Russia (Federation)--Volga River Valley.
Princeton subject headings:
Ethnic groups--Russia (Federation)--Ural Mountains Region.
Ethnic groups--Russia (Federation)--Volga River Region.
Ethnology--Russia (Federation)--Ural Mountains Region.
Ethnology--Russia (Federation)--Volga River Region.