Columbia subject headings:
Europe, Central--Ethnic relations--Congresses.
Minorities--Europe, Central--Congresses.
Multiculturalism--Europe, Central--Congresses.
Harvard subject headings:
Europe, Central--Ethnic relations--Congresses.
Minorities--Europe, Central--Congresses.
Multiculturalism--Europe, Central--Congresses.
Princeton subject headings:
Europe, Central--Ethnic relations--Congresses.
Minorities--Europe, Central--Congresses.
Multiculturalism--Europe, Central--Congresses.