Columbia subject headings:
Anti-imperialist movements--Puerto Rico.
Political activists--Legal status, laws, etc.--Puerto Rico.
Political crimes and offenses--Puerto Rico.
Puerto Rico--History--Autonomy and independence movements.
Puerto Rico--Politics and government.
Puerto Rico--Relations--United States.
Self-determination, National--Puerto Rico.
United States--Relations--Puerto Rico.
Harvard subject headings:
Anti-imperialist movements--Puerto Rico.
Political activists--Legal status, laws, etc.--Puerto Rico.
Political crimes and offenses--Puerto Rico.
Puerto Rico--History--Autonomy and independence movements
Puerto Rico--Politics and government
Puerto Rico--Relations--United States
Self-determination, National--Puerto Rico
United States--Relations--Puerto Rico
Princeton subject headings:
Anti-imperialist movements--Puerto Rico.
Imperialism.
Political science--Philosophy.
Puerto Rico--Colonial influence.
Puerto Rico--History--Autonomy and independence movements.
Puerto Rico--Politics and government.
State of siege--Puerto Rico.