Columbia subject headings:
Europe--Ethnic relations.
Minorities--Civil rights--Europe.
Minorities--Europe.
Minorities--Government policy--Europe.
Minorities--North America.
Organization for Security and Co-operation in Europe.
Harvard subject headings:
Minorities--Europe--Congresses
Organization for Security and Co-operation in Europe--Congresses.
Princeton subject headings:
Minorities--Europe--Congresses.
Organization for Security and Co-operation in Europe--Congresses.