Columbia subject headings:
Endangered languages--Europe.
Europe--Languages--Law and legislation.
Language obsolescence--Europe.
Language policy--Europe.
Linguistic minorities--Europe.
Harvard subject headings:
Language policy--Europe.
Linguistic minorities--Europe.
Linguistic minorities--Legal status, laws, etc.--Europe.
Princeton subject headings:
Endangered languages--Europe.
Europe--Languages--Law and legislation.
Language obsolescence--Europe.
Language policy--Europe.
Linguistic minorities--Europe.