Columbia subject headings:
China--Civilization--To 221 B.C.
China--History--To 221 B.C.
Ethnology--China--Huai River Valley--History.
Huai River Valley (China)--History.
Harvard subject headings:
China--Civilization--To 221 B.C.
China--History--To 221 B.C.
Ethnology--China--Huai River Valley--History.
Huai River Valley (China)--History.
Princeton subject headings: