Columbia subject headings:
Harvard subject headings:
China--History--Zhou dynasty, 1122 B.C.-221 B.C.
China--Politics and government--221 B.C.-960 A.D.
China--Politics and government--960-1644.
China--Politics and government--To 221 B.C.
Princeton subject headings:
China--History--Zhou dynasty, 1122-221 B.C.
China--Politics and government--221 B.C.-960 A.D.
China--Politics and government--960-1644.
China--Politics and government--To 221 B.C.