Columbia subject headings:
Italian language--1300-1500.
Italian language--Dialects--Italy--Tuscany.
Harvard subject headings:
Italian language--1300-1500.
Italian language--Dialects--Italy--Tuscany.
Princeton subject headings:
Italian language--1300-1500.
Italian language--Italy--Tuscany--History--To 1500.
Italian literature--To 1400--History and criticism.