Columbia subject headings:
Partido Independentista Puertorriqueño.
Puerto Rico--Politics and government.
Puerto Rico--Relations--United States.
Self-determination, National--Puerto Rico.
United States--Relations--Puerto Rico.
Harvard subject headings:
Partido Independentista Puertorriqueño--History.
Political parties--Puerto Rico--History.
Puerto Rico--History--Autonomy and independence movements.
Princeton subject headings:
Partido Independentista Puertorriqueño--History.
Political parties--Puerto Rico--History.
Puerto Rico--History--Autonomy and independence movements.