Columbia subject headings:
Harvard subject headings:
China--History--Han dynasty, 202 B.C.-220 A.D.--Sources.
China--History--Tang dynasty, 618-907--Sources.
Seals (Numismatics)--China
Princeton subject headings:
China--History--Han dynasty, 202 B.C.-220 A.D.--Sources.
China--History--Tang dynasty, 618-907--Sources.
Seals (Numismatics)--China.