Columbia subject headings:
Italy--Politics and government--20th century.
Nenni, Pietro, 1891-1980.
Socialists--Italy--Biography.
Statesmen--Italy--Biography.
Harvard subject headings:
Nenni, Pietro, 1891-
Socialism--Italy--History--20th century
Socialists--Italy--Biography
Statesmen--Italy--Biography.
Princeton subject headings:
Italy--Politics and government--20th century.
Nenni, Pietro, 1891-1980.
Socialists--Italy--Biography.
Statesmen--Italy--Biography.