Columbia subject headings:
Harvard subject headings:
Canada--Emigration and immigration--History--20th century.
Europeans--Canada--History--20th century.
Europeans--Canada--Social conditions--20th century.
Immigrants--Canada--History--20th century.
Immigrants--Canada--Social conditions--20th century.
Princeton subject headings:
Europeans--Canada--History--20th century.
Europeans--Canada--Social conditions--20th century.
Immigrants--Canada--History--20th century.
Immigrants--Canada--Social conditions--20th century.