Columbia subject headings:
Harvard subject headings:
Customs administration--China--History--19th century--Sources.
Loans, British--China--History--19th century--Sources.
Loans, German--China--History--19th century--Sources.
Princeton subject headings:
Customs administration--China--History--19th century--Sources.
Loans, British--China--History--19th century--Sources.
Loans, German--China--History--19th century--Sources.