Columbia subject headings:
French language--Alphabet.
French language--Phonetics.
French language--Spoken French--History.
French language--Technical French--History.
French language--Variation.
French language--Written French--History.
Manuscripts, French--History.
Harvard subject headings:
French language--Alphabet.
French language--Phonetics.
French language--Spoken French--History.
French language--Technical French--History.
French language--Variation.
French language--Written French--History.
Manuscripts, French--History.
Princeton subject headings:
French language--History.
French language--Spoken French.
Historical linguistics.