Columbia subject headings:
Berlinguer, Enrico.
Communist parties--Italy.
Italy--Politics and government--1994-2018.
Socialist parties--Italy.
Harvard subject headings:
Berlinguer, Enrico
Communist parties--Italy.
Communists--Italy.
Italy--Politics and government--1976-1994
Italy--Politics and government--1994-2018
Partito comunista italiano--Biography.
Socialist parties--Italy.
Princeton subject headings:
Berlinguer, Enrico.
Communist parties--Italy.
Italy--Politics and government--1994-.
Socialist parties--Italy.