Columbia subject headings:
Udmurtii︠a︡ (Russia)--History.
Udmurtii︠a︡ (Russia)--Relations.
Harvard subject headings:
Udmurtii︠a︡ (Russia)--Foreign relations.
Udmurtii︠a︡ (Russia)--History.
Udmurtii︠a︡ (Russia)--Relations.
Princeton subject headings: