Columbia subject headings:
China--History--To 221 B.C.
Ethics--China.
Harvard subject headings:
China--History--1766 B.C.-220 A.D.
China--History--221 B.C.-960 A.D.
China--History--To 1766 B.C.
China--History--To 221 B.C.
Ethics--China
Princeton subject headings: