Columbia subject headings:
Great Britain--Emigration and immigration--History--20th century--Sources.
Immigrants--Great Britain--Social conditions--20th century--Sources.
Minorities--Great Britain--Social conditions--20th century--Sources.
Harvard subject headings:
Great Britain--Emigration and immigration--History--20th century.
Immigrants--Great Britain--Social conditions.
Princeton subject headings:
Great Britain--Emigration and immigration--History--20th century.
Immigrants--Great Britain--Social conditions.