Columbia subject headings:
Harvard subject headings:
China--Emigration and immigration--History.
China--Social conditions--1644-1912.
China--Social conditions--960-1644.
Chinese--Foreign countries--History.
Princeton subject headings:
China--Emigration and immigration--History.
China--Social conditions--1644-1912.
China--Social conditions--960-1644.
Chinese--Foreign countries--History.