Columbia subject headings:
Grammar, Comparative and general--Phonetics.
Italian language--Germany--Ruhr (Region)--Phonetics.
Italian language--Italy--Catania--Phonetics.
Italian language--Spoken Italian--Germany--Ruhr (Region)
Italian language--Spoken Italian--Italy--Catania.
Harvard subject headings:
Grammar, Comparative and general--Phonetics.
Italian language--Germany--Ruhr (Region)--Phonetics.
Italian language--Italy--Catania--Phonetics.
Italian language--Spoken Italian--Germany--Ruhr (Region)
Italian language--Spoken Italian--Italy--Catania.
Italians--Germany--Ruhr (Region)--Languages.
Princeton subject headings:
Grammar, Comparative and general--Phonetics.
Italian language--Germany--Ruhr (Region)--Phonetics.
Italian language--Italy--Catania--Phonetics.
Italian language--Spoken Italian--Germany--Ruhr (Region).
Italian language--Spoken Italian--Italy--Catania.
Italians--Germany--Ruhr (Region)--Languages.