Columbia subject headings:
Ti︠u︡menskai︠a︡ oblastʹ (Russia)--Bibliography.
Ti︠u︡menskai︠a︡ oblastʹ (Russia)--History--Bibliography.
Harvard subject headings:
Ti︠u︡menskai︠a︡ oblastʹ (Russia)--Bibliography.
Ti︠u︡menskai︠a︡ oblastʹ (Russia)--History--Bibliography.
Princeton subject headings: