Columbia subject headings:
Harvard subject headings:
Equality--Europe, Central.
Equality--Europe, Eastern.
Europe, Central--Emigration and immigration.
Europe, Eastern--Emigration and immigration.
Social mobility--Europe, Central.
Social mobility--Europe, Eastern.
Welfare state--Europe, Central.
Welfare state--Europe, Eastern.
Princeton subject headings:
Europe, Central--Emigration and immigration.
Europe, Eastern--Emigration and immigration.
Immigrants--Europe, Central.
Immigrants--Europe, Eastern.