Columbia subject headings:
Harvard subject headings:
Abruzzo (Italy)--Emigration and immigration--History--19th century.
Abruzzo (Italy)--Emigration and immigration--History--20th century.
Italy--Economic conditions--1870-1918.
Princeton subject headings:
Abruzzo (Italy)--Emigration and immigration--History--19th century.
Abruzzo (Italy)--Emigration and immigration--History--20th century.
Italy--Economic conditions--1870-1918.