Columbia subject headings:
Italy--Politics and government--1914-1922.
Italy--Politics and government--1922-1945.
Nenni, Pietro, 1891-1980.
Socialism--Italy--History--20th century.
Socialists--Italy--Biography.
Statesmen--Italy--Biography.
Harvard subject headings:
Italy--Politics and government--1914-1922.
Italy--Politics and government--1922-1945.
Nenni, Pietro, 1891-
Nenni, Pietro, 1891-1980.
Socialism--Italy--20th century.
Socialism--Italy--History--20th century
Socialists--Italy--Biography
Statesmen--Italy--Biography.
Princeton subject headings:
Italy--Politics and government--1914-1922.
Italy--Politics and government--1922-1945.
Nenni, Pietro, 1891-1980.
Socialism--Italy--History--20th century.
Socialists--Italy--Biography.
Statesmen--Italy--Biography.