Columbia subject headings:
British--China--History--19th century.
British--China--History--20th century.
China--Commerce--History--19th century.
China--Commerce--History--20th century.
Noncitizens--China--History--19th century.
Noncitizens--China--History--20th century.
Harvard subject headings:
British--China--History--19th century.
British--China--History--20th century.
China--Commerce--History--19th century.
China--Commerce--History--20th century.
Noncitizens--China--History--19th century.
Noncitizens--China--History--20th century.
Princeton subject headings:
British--China--History--19th century.
British--China--History--20th century.
China--Commerce--History--19th century.
China--Commerce--History--20th century.
Noncitizens--China--History--19th century.
Noncitizens--China--History--20th century.