Columbia subject headings:
Names, Ethnological--Russia (Federation)--Udmurtii︠a︡.
Harvard subject headings:
Names, Ethnological--Russia (Federation)--Udmurtii︠a︡.
Names, Geographical--Russia (Federation)--Udmurtii︠a︡.
Udmurtii︠a︡ (Russia)--Historical geography.
Princeton subject headings:
Names, Ethnological--Russia (Federation)--Udmurtii︠a︡.
Names, Geographical--Russia (Federation)--Udmurtii︠a︡.
Udmurtii︠a︡ (Russia)--Historical geography.