Columbia subject headings:
Harvard subject headings:
Gregorio, Rosario, 1753-1809.
Historians--Italy--Sicily--Biography.
Sicily (Italy)--Historiography.
Princeton subject headings:
Catholic Church--Italy--Sicily--Clergy--Biography.
Gregorio, Rosario, 1753-1809.
Historians--Italy--Sicily--Biography.
Intellectuals--Italy--Sicily--Biography.
Sicily (Italy)--Biography.