Columbia subject headings:
Harvard subject headings:
Hokkaido (Japan)--History.
Japan--Foreign relations--Russia.
Kuril Islands (Russia)--History.
Russia--Foreign relations--Japan.
Sakhalin (Sakhalinskai︠a︡ oblastʹ, Russia)--History.
Princeton subject headings:
Hokkaido (Japan)--History.
Japan--Foreign relations--Russia.
Kuril Islands (Russia)--History.
Russia--Foreign relations--Japan.
Sakhalin (Sakhalinskai︠a︡ oblastʹ, Russia)--History.