Columbia subject headings:
Harvard subject headings:
Yichang Xian (Hubei Sheng, China)--Economic conditions.
Yichang Xian (Hubei Sheng, China)--Social conditions.
Princeton subject headings:
Yichang Xian (Hubei Sheng, China)--Economic conditions.
Yichang Xian (Hubei Sheng, China)--Social conditions.