Columbia subject headings:
China--Social conditions.
Ching-ho (China)
Qinghe Xian (Hebei Sheng, China)--Economic conditions.
Qinghe Xian (Hebei Sheng, China)--Social conditions.
Harvard subject headings:
China--Economic conditions--1912-1949.
China--Social conditions--1912-1949.
Qinghe Xian (Hebei Sheng, China)--Economic conditions.
Qinghe Xian (Hebei Sheng, China)--Social conditions.
Social surveys--China--Qinghe Xian (Hebei Sheng)
Princeton subject headings:
Chʻing-ho hsien (Hopeh Province, China)--Economic conditions.
Chʻing-ho hsien (Hopeh Province, China)--Social conditions.