Columbia subject headings:
Harvard subject headings:
China--History--Song dynasty, 960-1279--Chronology.
Song Guangzong, Emperor of China, 1147-1200.
Song Ningzong, Emperor of China, 1147-1200.
Princeton subject headings:
China--History--Song dynasty, 960-1279--Chronology.
Song Guangzong, Emperor of China, 1147-1200.
Song Ningzong, Emperor of China, 1168-1224.