Columbia subject headings:
Kuril Islands (Russia)--Discovery and exploration.
Sakhalin (Sakhalinskai︠a︡ oblastʹ, Russia)--Discovery and exploration.
Harvard subject headings:
Kuril Islands (Russia)--Description and travel.
Sakhalin (Sakhalinskai͡a oblastʹ, Russia)--Description and travel.
Princeton subject headings:
Kuril Islands (Russia)--Discovery and exploration.
Sakhalin (Sakhalinskai︠a︡ oblastʹ, Russia)--Discovery and exploration.