Columbia subject headings:
Omskai︠a︡ oblastʹ (Russia)--Biography--Periodicals.
Omskai︠a︡ oblastʹ (Russia)--History--Periodicals.
Harvard subject headings:
Omskai︠a︡ oblastʹ (Russia)--Biography.
Omskai︠a︡ oblastʹ (Russia)--History.
Princeton subject headings:
Omskai︠a︡ oblastʹ (Russia)--Biography--Periodicals.
Omskai︠a︡ oblastʹ (Russia)--History--Periodicals.