Columbia subject headings:
France--Languages--Political aspects.
Great Britain--Languages--Political aspects.
Sociolinguistics--France.
Sociolinguistics--Great Britain.
Harvard subject headings:
France--Languages--Political aspects.
Great Britain--Languages--Political aspects.
Sociolinguistics--France.
Sociolinguistics--Great Britain.
Princeton subject headings:
France--Languages--Political aspects.
Great Britain--Languages--Political aspects.
Sociolinguistics--France.
Sociolinguistics--Great Britain.