Columbia subject headings:
Historiography--Italy.
Italy--History--1870-1914--Historiography.
Italy--History--20th century--Historiography.
Labor movement--Italy--Historiography.
Labor unions--Italy--Historiography.
Harvard subject headings:
Historiography--Italy.
Italy--History--1870-1914--Historiography.
Italy--History--20th century--Historiography.
Labor unions--Italy--Historiography.
Labor--Italy--Historiography.
Working class--Italy--Historiography.
Princeton subject headings:
Historiography--Italy.
Italy--History--1870-1914--Historiography.
Italy--History--20th century--Historiography.
Labor Working class--Italy--Historiography.
Labor unions--Italy--Historiography.