Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--Economic conditions.
Balkan Peninsula--Emigration and immigration--History.
Balkan Peninsula--Social conditions.
Europe, Central--Economic conditions.
Europe, Central--Emigration and immigration--History.
Europe, Central--Social conditions.
Europe--Emigration and immigration--History.
Minorities--Europe
Romanies--Europe--Social conditions.
Romanies--Europe.
Princeton subject headings:
Balkan Peninsula--Economic conditions.
Balkan Peninsula--Emigration and immigration--History.
Balkan Peninsula--Social conditions.
Europe, Central--Economic conditions.
Europe, Central--Emigration and immigration--History.
Europe, Central--Social conditions.
Europe--Emigration and immigration--History.
Minorities--Europe.
Romanies--Europe--Social conditions.
Romanies--Europe.