Columbia subject headings:
Harvard subject headings:
China--History--Song dynasty, 960-1279.
Korea--History.
Princeton subject headings:
China--Foreign relations--Korea--History.
China--History--Jin dynasty, 1115-1234.
China--History--Song dynasty, 960-1279.
Korea--Foreign relations--China--History.
Korea--History--Koryŏ period, 935-1392.