Columbia subject headings:
Harvard subject headings:
France--Languages--Law and legislation.
France--Languages--Political aspects.
Language policy--France--History--20th century.
Linguistic minorities--Government policy--France--History.
Occitan language--Study and teaching--France, Southern--History.
Princeton subject headings:
French language--Dialects--Law and legislation.
French language--Dialects--Political aspects.
Language policy--France.