Columbia subject headings:
Harvard subject headings:
China--Officials and employees--Selection and appointment--History.
Civil service--China--Examinations--History.
Princeton subject headings:
China--History--Jin dynasty, 265-419.
China--History--Southern and Northern dynasites, 317-589.
China--History--Three kingdoms, 220-265.
China--Officials and employees--History.
Civil service--China--Examinations--History.
Civil service--China--History.