Columbia subject headings:
Europe, Eastern--Emigration and immigration--History--To 1500.
Europe, Eastern--History--To 1500.
Immigrants--Europe, Eastern--History--To 1500.
Harvard subject headings:
Europe, Eastern--Emigration and immigration--History--To 1500.
Europe, Eastern--History--To 1500.
Immigrants--Europe, Eastern--History--To 1500.
Princeton subject headings:
Europe, Eastern--Emigration and immigration--History--To 1500.
Europe, Eastern--History--To 1500.
Immigrants--Europe, Eastern--History--To 1500.