Columbia subject headings:
Harvard subject headings:
Church and minorities--Europe.
Ethnic relations--Political aspects
Europe--Ethnic relations.
Minorities--Europe
Nationalism--Europe
Princeton subject headings:
Church and minorities--Europe--Congresses.
Ethnic relations--Political aspects--Congresses.
Europe--Ethnic relations--Congresses.
Minorities--Europe--Congresses.
Nationalism--Europe--Congresses.