Columbia subject headings:
Harvard subject headings:
Argentina--Emigration and immigration--History--20th century.
Argentina--Emigration and immigration--History--21st century.
Argentines--Employment--Spain.
Argentines--Spain.
Immigrants--Spain--Social conditions
Spain--Emigration and immigration--History--20th century.
Spain--Emigration and immigration--History--21st century.
Princeton subject headings:
Argentina--Emigration and immigration--History.
Argentines--Employment--Spain.
Argentines--Spain.
Immigrants--Spain--Social conditions.
Spain--Emigration and immigration--History.