Columbia subject headings:
Assassination--Puerto Rico--History--20th century.
Puerto Rico--Foreign relations--United States.
Puerto Rico--Politics and government--1952-1998.
Puerto Rico--Social conditions--1952-
United States--Foreign relations--Puerto Rico.
Harvard subject headings:
Government and the press--Puerto Rico.
Police--Complaints against--Puerto Rico.
Police--Puerto Rico--Case studies.
Puerto Rico--History--1952-
Puerto Rico--Politics and government--1952-
Puerto Rico--Politics and government--1952-1998.
Puerto Rico--Relations--United States.
United States--Relations--Puerto Rico.
Princeton subject headings:
Assassination--Puerto Rico--History--20th century.
Puerto Rico--Foreign relations--United States.
Puerto Rico--Politics and government--1952-1998.
Puerto Rico--Social conditions--1952-
United States--Foreign relations--Puerto Rico.