Columbia subject headings:
Harvard subject headings:
Escobar Llanos, Fernando.
Espionage, Cuban--History--20th century.
Guevara, Che, 1928-1967--Friends and associates.
Spies--Cuba--Biography.
Princeton subject headings:
Escobar Llanos, Fernando.
Guerrillas--Latin America--Biography.
Guevara, Che, 1928-1967--Friends and associates.
Spies--Latin America--Biography.