Columbia subject headings:
Harvard subject headings:
Japan--Foreign relations--Korea.
Korea--Foreign relations--Japan.
Tsushima Island (Japan)
Princeton subject headings:
Japan--Foreign relations--1600-1868.
Japan--Foreign relations--Korea.
Korea--Foreign relations--Japan.
Tsushima Island (Japan)--History--17th century.
Tsushima Island (Japan)--History--18th century.
Tsushima Island (Japan)--History--19th century.