Columbia subject headings:
Harvard subject headings:
Franco-Provençal dialects--Italy--Piedmont--Bibliography.
Occitan language--Italy--Piedmont--Bibliography.
Piedmont (Italy)--Languages--Bibliography.
Princeton subject headings:
Language and culture--Italy--Piedmont--Bibliography.
Piedmont (Italy)--Bibliography.
Piedmont (Italy)--Imprints.
Piedmont (Italy)--Languages.