Columbia subject headings:
Harvard subject headings:
Italian language--Dialects--Italy.
Italian language--Foreign elements
Rohlfs, Gerhard, 1892-
Romance philology--Study and teaching--Italy--History.
Romanicists--Italy--Biography.
Princeton subject headings:
Italian language--Dialects--Italy.
Italian language--Foreign elements.
Philologists--Germany--Biography.
Rohlfs, Gerhard, 1892-1986.
Romance philology--Study and teaching.