Columbia subject headings:
Harvard subject headings:
China--History--Han dynasty, 202 B.C.-220 A.D.--Indexes.
China--History--Qin dynasty, 221 B.C.-207 B.C.--Indexes.
China--History--Warring States, 403 B.C.-221 B.C.--Indexes.
Princeton subject headings:
China--History--Han dynasty, 202 B.C.-220 A.D.--Indexes.
China--History--Qin dynasty, 221-207 B.C.--Indexes.
China--History--Warring States, 403-221 B.C.--Indexes.