Columbia subject headings:
Harvard subject headings:
Irkutskai︠a︡ oblastʹ (Russia)--History--Periodicals.
Irkutskai︠a︡ oblastʹ (Russia)--History--Sources--Periodicals.
Princeton subject headings:
Irkutskai︠a︡ oblastʹ (Russia)--History--Periodicals.
Irkutskai︠a︡ oblastʹ (Russia)--History--Sources--Periodicals.
Periodicals.