Columbia subject headings:
Sicilian Vespers, Italy, 1282--Influence.
Sicily (Italy)--History--1282-1409.
Harvard subject headings:
Cities and towns, Medieval--Italy--Sicily
Sicilian Vespers, Italy, 1282--Influence.
Sicily (Italy)--History--1282-1409
Princeton subject headings:
Sicilian Vespers, Italy, 1282--Influence.
Sicily (Italy)--History--1282-1409.