Columbia subject headings:
China--Intellectual life--To 221 B.C.
Philosophy, Chinese--To 221 B.C.
Harvard subject headings:
China--Intellectual life--To 221 B.C.
Philosophy, Chinese--To 221 B.C.
Princeton subject headings:
China--Intellectual life--To 221 B.C.
Philosophy, Chinese--To 221 B.C.