Columbia subject headings:
Harvard subject headings:
China--History--Northern Wei dynasty, 386-534.
China--History--Northern and Southern dynasties, 386-589.
China--History--Sui dynasty, 581-618.
Princeton subject headings:
China--History--Northern Wei dynasty, 386-534.
China--History--Northern and Southern dynasties, 386-589.
China--History--Sui dynasty, 581-618.