Columbia subject headings:
Harvard subject headings:
Assassination--Portugal.
Delgado, Humberto da Silva, 1906-1965--Assassination.
Generals--Portugal--Biography
Polícia Internacional e de Defesa do Estado (Portugal)
Portugal--Politics and government--1910-1974.
United States. Central Intelligence Agency
Princeton subject headings:
Assassination--Portugal.
Delgado, Humberto da Silva, 1906-1965--Assassination.
Generals--Portugal--Biography.
Polícia Internacional e de Defesa do Estado (Portugal)
Portugal--Politics and government--1910-1974.
United States. Central Intelligence Agency