Columbia subject headings:
Harvard subject headings:
Industries--China--Guangdong Sheng.
Industries--China--Hainan Sheng.
Physical geography--China--Guangdong Sheng.
Physical geography--China--Hainan Sheng.
Princeton subject headings:
Guangdong Sheng (China)--Industries.
Hainan Sheng (China)--Industries.
Physical geography--China--Guangdong Sheng.
Physical geography--China--Hainan Sheng.