Columbia subject headings:
Harvard subject headings:
Guangdong Sheng (China)--Relations--China--Hong Kong.
Guangdong Sheng (China)--Relations--China--Macau (Special Administrative Region)
Hong Kong (China)--Relations--China--Guangdong Sheng.
Macau (China : Special Administrative Region)--Relations--China--Guangdong Sheng.
Princeton subject headings:
Guangdong Sheng (China)--History.
Hong Kong (China)--History.
Macau (China : Special Administrative Region)--History.