Columbia subject headings:
Ainu.
Sakhalin (Sakhalinskai︠a︡ oblastʹ, Russia)--Social life and customs.
Yezo--Social life and customs.
Harvard subject headings:
Ainu
Hokkaido (Japan)--Social life and customs.
Sakhalin (Sakhalinskai͡a oblastʹ, Russia)--Social life and customs.
Princeton subject headings: