Columbia subject headings:
Guangzhou Shi (China)--Commerce.
Guangzhou Shi (China)--Economic conditions.
Guilds--China--Guangzhou Shi--History.
Harvard subject headings:
Guangdong Sheng (China)--Commerce--History.
Guilds--China--Guangdong Sheng--History.
Merchant marine--China--Guangdong Sheng--History.
Trade routes--China--Guangdong Sheng--History.
Princeton subject headings: