Columbia subject headings:
Harvard subject headings:
China--Intellectual life--221 B.C.-960 A.D.
China--Social life and customs--221 B.C.-960 A.D.
Liu, Zhiji, 661-721. Shi tong
Philosophy, Chinese--221 B.C.-960 A.D.
Princeton subject headings:
China--Civilization--221 B.C.-960 A.D.
China--History--Tang dynasty, 618-907.
China--Intellectual life--221 B.C.-960 A.D.
Philosophy, Chinese--221 B.C.-960 A.D.