Columbia subject headings:
Harvard subject headings:
Croce, Benedetto, 1866-1952. Correspondence
Philosophers--Italy--Correspondence
Socialism--Italy
Socialists--Italy--Correspondence
Turati, Filippo, 1857-1932--Correspondence.
Princeton subject headings:
Croce, Benedetto, 1866-1952. Correspondence.
Turati, Filippo, 1857-1932--Correspondence.