Columbia subject headings:
Harvard subject headings:
China--History--19th century
China--History--20th century
Hong Kong (China)--History.
Learning and scholarship--China--Congresses.
Macau (China : Special Administrative Region)--History.
Princeton subject headings:
China--History--19th century--Congresses.
China--History--20th century--Congresses.
Hong Kong (China)--History--Congresses.
Hong Kong (China)--Relations--Congresses.
Macau (China : Special Administrative Region)--History--Congresses.
Macau (China : Special Administrative Region)--Relations--Congresses.