Columbia subject headings:
Harvard subject headings:
Hokkaido (Japan)--Antiquities.
Japan--Foreign relations--Soviet Union.
Kuril Islands (Russia)--Description and travel.
Soviet Union--Foreign relations--Japan.
Princeton subject headings:
Hokkaido (Japan)--Antiquities.
Japan--Foreign relations--Soviet Union.
Kuril Islands (Russia)--Description and travel.
Soviet Union--Foreign relations--Japan.