Columbia subject headings:
Harvard subject headings:
China--Antiquities.
China--History--Sui dynasty, 581-618.
China--History--Tang dynasty, 618-907.
Excavations (Archaeology)--China
Princeton subject headings:
China--Antiquities.
China--Hiastory--Tang dynasty, 618-907.
China--History--Sui dynasty, 581-618.
Excavations (Archaeology)--China.