Columbia subject headings:
Harvard subject headings:
Excavations (Archaeology)--China--Yi Xian (Hebei Sheng)
Yi Xian (Hebei Sheng, China)--Antiquities.
Princeton subject headings:
China--Capital and capitol--History.
China--History--To 221 B.C.
Excavations (Archaeology)--China--Yi Xian (Hebei Sheng).
Hebei Sheng (China)--Antiquities.