Columbia subject headings:
Communism--Italy--History.
Communists--Italy--Biography.
Terracini, Umberto, 1895-1983.
Harvard subject headings:
Italy--Politics and government--20th century.
Terracini, Umberto, 1895-
Princeton subject headings:
Communism--Italy--History.
Communists--Italy--Biography.
Terracini, Umberto, 1895-1983.