Columbia subject headings:
Europe, Central--Ethnic relations.
Europe, Eastern--Ethnic relations.
Minorities--Europe, Central--History--19th century.
Minorities--Europe, Central--History--20th century.
Minorities--Europe, Eastern--History--19th century.
Minorities--Europe, Eastern--History--20th century.
Harvard subject headings:
Princeton subject headings:
Ethnicity--Europe, Eastern
Europe, Eastern--Ethnic relations--History.
Europe, Eastern--History--19th century.
Europe, Eastern--History--20th century.