Columbia subject headings:
Italy--Politics and government--1914-1922.
Revolutionaries--Italy--History.
Revolutionaries--Soviet Union--History.
Russians--Italy--History.
Socialism--Italy--History.
Soviet Union--History--Revolution, 1917-1921--Influence.
Harvard subject headings:
Italy--Politics and government--1914-1922.
Revolutionaries--Italy--History.
Revolutionaries--Soviet Union--History.
Russians--Italy--History.
Socialism--Italy
Socialism--Italy--History
Soviet Union--History--Revolution, 1917-1921--Influence.
Princeton subject headings:
Italy--Politics and government--1914-1922.
Revolutionaries--Italy--History.
Revolutionaries--Soviet Union--History.
Russians--Italy--History.
Socialism--Italy--History.
Soviet Union--History--Revolution, 1917-1921--Influence.