Columbia subject headings:
Ural Mountains Region (Russia)--Economic conditions.
Ural Mountains Region (Russia)--History--Sources.
Ural Mountains Region (Russia)--Social conditions--Historiography.
Harvard subject headings:
Ural Mountains Region (Russia)--Economic conditions--Historiography.
Ural Mountains Region (Russia)--History--Sources.
Ural Mountains Region (Russia)--Social conditions--Historiography.
Princeton subject headings:
Ural Mountains Region (Russia)--History.