Columbia subject headings:
Harvard subject headings:
Mordovii︠a︡ (Russia)--Economic conditions--History--20th century.
Mordovii︠a︡ (Russia)--History--20th century.
Mordovii︠a︡ (Russia)--Politics and government--20th century.
Soviet Union--Politics and government.
Princeton subject headings:
Mordovii︠a︡ (Russia)--Economic conditions--History--20th century.
Mordovii︠a︡ (Russia)--History--20th century.
Mordovii︠a︡ (Russia)--Politics and government--20th century.
Soviet Union--Politics and government.