Columbia subject headings:
Harvard subject headings:
Calligraphy, Chinese--History--Qin-Han dynasties, 221 B.C.-220 A.D.
Calligraphy, Chinese--History--To 221 B.C.
Princeton subject headings:
Calligraphy, Chinese--History--Qin-Han dynasties, 221 B.C.-220 A.D.
Calligraphy, Chinese--History--Three kingdoms-Sui dynasty, 220-618.