Columbia subject headings:
Harvard subject headings:
Italy--History--1870-1914--Sources.
Politicians--Italy--Correspondence
Sighele, Scipio, 1868-1913
Social scientists--Italy--Correspondence.
Princeton subject headings:
Italy--History--1870-1914--Sources.
Politicians--Italy--Correspondence.
Sighele, Scipio, 1868-1913.
Social scientists--Italy--Correspondence.