Columbia subject headings:
China--History--Qing dynasty, 1644-1912.
Customs administration--China--History.
Tariff--China.
Harvard subject headings:
China--History--Qing dynastry, 1644-1912.
Customs administration--China.
Tariff--China.
Princeton subject headings:
China--History--Qing dynasty, 1644-1912.
Customs administration--China.
Tariff--China.