Columbia subject headings:
Harvard subject headings:
Bridles--History.
Italian language--1300-1500.
Italian language--Dialects--Italy--Emilia-Romagna.
Princeton subject headings:
Bridles--Early works to 1800.
Horsemanship--Early works to 1800.
Horses--Training--Early works to 1800.
Italian language--1300-1500.