Columbia subject headings:
Conference on Security and Cooperation in Europe (Organization)
League of Nations.
Minorities--Legal status, laws, etc.
Organization for Security and Co-operation in Europe.
Harvard subject headings:
Minorities--Legal status, laws, etc.
Princeton subject headings:
Conference on Security and Cooperation in Europe (Organization)
League of Nations.
Minorities--Legal status, laws, etc.
Organization for Security and Co-operation in Europe.