Columbia subject headings:
Emigration and immigration--Economic aspects.
Italy--Emigration and immigration--Social aspects.
Spain--Emigration and immigration--Social aspects.
Turkey--Emigration and immigration--Social aspects.
Harvard subject headings:
Emigration and immigration--Economic aspects
Emigration and immigration--Emigration and immigration--Italy--Social aspects.
Emigration and immigration--Emigration and immigration--Spain--Social aspects.
Emigration and immigration--Emigration and immigration--Turkey--Social aspects.
Italy--Emigration and immigration--Social aspects.
Spain--Emigration and immigration--Social aspects.
Turkey--Emigration and immigration--Social aspects.
Princeton subject headings:
Emigration and immigration--Economic aspects.
Italy--Emigration and immigration--Social aspects.
Spain--Emigration and immigration--Social aspects.
Turkey--Emigration and immigration--Social aspects.