Columbia subject headings:
Harvard subject headings:
Carta abierta a Fidel Castro.
Cuba--Politics and government--1959-
Cuba--Politics and government--1959-1990.
Human rights--Cuba
Plebiscite--Cuba.
Princeton subject headings:
Castro, Fidel, 1926-2016.
Cuba--Politics and government--1959-1990.
Plebiscite--Cuba.