Columbia subject headings:
China--Ethnic relations.
China--History--221 B.C.-960 A.D.
Ethnology--China--History.
Minorities--China--History.
Harvard subject headings:
China--Ethnic relations.
Ethnology--China--History
Minorities--China--History
Princeton subject headings:
China--Ethnic relations.
China--History--221 B.C.-960 A.D.
Ethnology--China--History.
Minorities--China--History.