Columbia subject headings:
Foreign workers, Chinese--France--History--20th century--Congresses.
Working class--China--History--20th century--Congresses.
World War, 1914-1918--Participation, Chinese--Congresses.
Harvard subject headings:
China--Relations--France--Congresses.
Foreign workers, Chinese--France--History--20th century--Congresses.
France--Relations--China--Congresses.
World War, 1914-1918--China--History--Congresses.
World War, 1914-1918--France--Congresses.
World War, 1914-1918--France--Social conditions--Congresses.
Princeton subject headings:
Foreign workers, Chinese--Europe.--History.
Working class--China.--History.--20th century.
World War, 1914-1918--Participation, Chinese.