Columbia subject headings:
Harvard subject headings:
China--History--Han dynasty, 202 B.C.-220 A.D.
China--Social conditions--221 B.C.-960 A.D.
Social structure--China.
Princeton subject headings:
China--History--Han dynasty, 202 B.C.-220 A.D.
China--Social conditions--221 B.C.-960 A.D.
Social structure--China.