Columbia subject headings:
China--History--Warring States, 403-221 B.C.
China--History--Zhou dynasty, 1122-221 B.C.
China--Politics and government--To 221 B.C.
Harvard subject headings:
China--History--Warring States, 403-221 B.C.
China--History--Zhou dynasty, 1122-221 B.C.
China--Politics and government--To 221 B.C.
Princeton subject headings: