Columbia subject headings:
China--Economic conditions--1644-1912.
China--Foreign economic relations--Korea.
Korea--Economic conditions--1864-1910.
Korea--Economic conditions--18th century.
Korea--Foreign economic relations--China.
Harvard subject headings:
China--Economic conditions--1644-1912
China--Foreign economic relations--Korea.
Korea--Economic conditions--1864-1910.
Korea--Economic conditions--18th century.
Korea--Foreign economic relations--China.
Princeton subject headings:
China--Economic conditions--1644-1912.
China--Foreign economic relations--Korea.
Korea--Economic conditions--1864-1910.
Korea--Economic conditions--18th century.
Korea--Foreign economic relations--China.