Columbia subject headings:
Harvard subject headings:
Beijing (China)--Population--Statistics.
Guangzhou (China)--Population--Statistics.
Shanghai (China)--Population--Statistics.
Tianjin (China)--Population--Statistics.
Princeton subject headings:
Beijing (China)--Population--Statistics.
Guangzhou (China)--Population--Statistics.
Shanghai (China)--Population--Statistics.
Tianjin (China)--Population--Statistics.