Columbia subject headings:
China--Politics and government--To 1642.
China--Social conditions.
Harvard subject headings:
Princeton subject headings:
China--Politics and government--Han dynasty, 202 B.C.-220 A.D.
China--Politics and government--To 221 B.C.
China--Social conditions--202 B.C.-220 A.D.
China--Social conditions--To 221 B.C.