Columbia subject headings:
Udmurtii︠a︡ (Russia)--Antiquities.
Udmurts--History.
Harvard subject headings:
Udmurtii︠a︡ (Russia)--Antiquities.
Udmurtii︠a︡ (Russia)--History.
Udmurts--History.
Princeton subject headings:
Udmurts--History.