Columbia subject headings:
Harvard subject headings:
Japan--Foreign relations--Russia.
Russia--Foreign relations--Japan.
Sakhalin (Sakhalinskai︠a︡ oblastʹ, Russia)--International status--History.
Princeton subject headings:
Japan--Foreign relations--Russia.
Russia--Foreign relations--Japan.
Sakhalin (Sakhalinskai︠a︡ oblastʹ, Russia)--International status--History.