Columbia subject headings:
Cultural property--Protection--Russia (Federation)--Omskai︠a︡ oblastʹ--Congresses.
Historic sites--Russia (Federation)--Omskai︠a︡ oblastʹ--Congresses.
Omskai︠a︡ oblastʹ (Russia)--History--Congresses.
Harvard subject headings:
Cultural property--Protection--Russia (Federation)--Omskai︠a︡ oblastʹ.
Historic sites--Russia (Federation)--Omskai︠a︡ oblastʹ.
Omskai︠a︡ oblastʹ (Russia)--History.
Princeton subject headings:
Cultural property--Protection--Russia (Federation)--Omskai︠a︡ oblastʹ.
Historic sites--Russia (Federation)--Omskai︠a︡ oblastʹ.
Omskai︠a︡ oblastʹ (Russia)--History.