Columbia subject headings:
Harvard subject headings:
Fascism--Italy--Sicily--History--Sources.
Labor--Italy--Sicily--History--Sources.
Sicily (Italy)--History--1870-1945--Sources.
Working class--Italy--Sicily--History--Sources.
Princeton subject headings:
Fascism--Italy--Sicily--History--Sources.
Sicily (Italy)--History--1870-1945--Sources.
Working class--Italy--Sicily--History--Sources.