Columbia subject headings:
Foreign workers--France.
Foreign workers--Great Britain.
France--Emigration and immigration.
France--Race relations.
Great Britain--Emigration and immigration.
Great Britain--Race relations.
Harvard subject headings:
Foreign workers--France
Foreign workers--France--History--20th century.
Foreign workers--Great Britain
Foreign workers--Great Britain--History--20th century.
France--Emigration and immigration.
France--Race relations.
Great Britain--Emigration and immigration.
Great Britain--Race relations.
Princeton subject headings:
Foreign workers--France.
Foreign workers--Great Britain.
France--Emigration and immigration.
France--Race relations.
Great Britain--Emigration and immigration.
Great Britain--Race relations.