Columbia subject headings:
Europe, Eastern--Ethnic relations--History.
Jewish diaspora--History.
Jews--Europe, Eastern--History.
Harvard subject headings:
Europe, Eastern--Ethnic relations--History--20th century.
Jewish diaspora--History--20th century.
Jews--Europe, Eastern--History--20th century.
Minorities--Europe, Eastern--History--20th century.
Princeton subject headings:
Europe, Eastern--Ethnic relations--History.
Jewish diaspora--History.
Jews--Europe, Eastern--History.