Columbia subject headings:
Frederick II, Holy Roman Emperor, 1194-1250--Art patronage.
Italian poetry--To 1400.
Poets, Italian--Italy--Sicily.
Harvard subject headings:
Frederick II, Holy Roman Emperor, 1194-1250--Art patronage.
Italian poetry--To 1400
Poets, Italian--Italy--Sicily.
Princeton subject headings:
Italian poetry--Italy--Sicily.
Italian poetry--To 1400.