Columbia subject headings:
Harvard subject headings:
Ainu--History
Hokkaido (Japan)--History.
Sakhalin (Sakhalinskai︠a︡ oblastʹ, Russia)--History.
Princeton subject headings:
Ainu--History.
Hokkaido (Japan)--History.
Sakhalin (Sakhalinskai︠a︡ oblastʹ, Russia)--History.