Columbia subject headings:
Japan--Foreign relations--Korea (South)
Korea (South)--Foreign relations--Japan.
Territory, National--Japan.
Territory, National--Korea (South)
Tok Island (Korea)--History.
Tok Island (Korea)--International status.
Harvard subject headings:
Japan--Foreign relations--Korea (South)
Korea (South)--Foreign relations--Japan.
Territory, National--Japan.
Territory, National--Korea (South)
Tok Island (Korea)
Tok Island (Korea)--International status.
Princeton subject headings:
Japan--Foreign relations--Korea (South).
Korea (South)--Foreign relations--Japan.
Territory, National--Japan.
Territory, National--Korea (South)
Tok Island (Korea)
Tok Island (Korea)--International status.