Columbia subject headings:
Harvard subject headings:
China--Economic conditions--1644-1912
China--Economic conditions--1912-1949.
China--Social conditions--1644-1912.
China--Social conditions--1912-1949.
Princeton subject headings:
China--Economic conditions--1644-1912.
China--Economic conditions--1912-1949.
China--Social conditions--1644-1912.
China--Social conditions--1912-1949.