Columbia subject headings:
Ethnology--Russia (Federation)--Kama River Region.
Kama River Region (Russia)--History.
Kama River Region (Russia)--Social conditions.
Harvard subject headings:
Ethnology--Russia (Federation)--Kama River Region.
Kama River Region (Russia)--History.
Kama River Region (Russia)--Social conditions.
Princeton subject headings:
Ethnology--Russia (Federation)--Kama River Region.
Kama River Region (Russia)--History.
Kama River Region (Russia)--Social conditions.