Columbia subject headings:
Guangdong Sheng (China)--Social conditions--19th century.
Guangdong Sheng (China)--Social conditions--20th century.
Hong men (Society)--China--Guangdong Sheng--History.
Secret societies--China--Guangdong Sheng--History--19th century.
Secret societies--China--Guangdong Sheng--History--20th century.
Harvard subject headings:
Guangdong Sheng (China)--Social conditions.
Secret societies--China--Guangdong--History.
Social change--China--Guangdong.
Princeton subject headings:
Guangdong Sheng (China)--Social conditions--19th century.
Guangdong Sheng (China)--Social conditions--20th century.
Hong men (Society)--China--Guangdong Sheng--History.
Secret societies--China--Guangdong Sheng--History--19th century.
Secret societies--China--Guangdong Sheng--History--20th century.