Columbia subject headings:
Labor unions--India--Shanghai.
Shanghai (China)--Economic conditions.
Shanghai (China)--Social conditions.
Working class--China--Shanghai.
Working class--Political activity--China--Shanghai.
Harvard subject headings:
Working class--China--Shanghai.
Princeton subject headings:
Labor unions--China--Shanghai.
Shanghai (China)--Economic conditions.
Shanghai (China)--Social conditions.
Working class--China--Shanghai--Political activity.
Working class--China--Shanghai.