Columbia subject headings:
Harvard subject headings:
Sichuan Sheng (China)--Economic conditions--Qing dynasty, 1644-1912.
Sichuan Sheng (China)--History.
Princeton subject headings:
Agriculture--Economic aspects--China--Sichuan Sheng.
China--Economic conditions--1644-1912.
Sichuan Sheng (China)--Economic conditions.