Columbia subject headings:
Barontini, Ilio, 1890-1951.
Communists--Italy--Livorno--Biography.
Italy--Emigration and immigration.
Soviet Union--Emigration and immigration.
Soviet Union--History--1925-1953.
Harvard subject headings:
Barontini, Ilio, 1890-1951.
Communists--Italy--Livorno--Biography.
Italy--Emigration and immigration.
Soviet Union--Emigration and immigration.
Soviet Union--History--1925-1953.
Princeton subject headings:
Barontini, Ilio, 1890-1951.
Communists--Italy--Livorno--Biography.
Italy--Emigration and immigration.
Soviet Union--Emigration and immigration.
Soviet Union--History--1925-1953.