Columbia subject headings:
Partido Socialista Puertorriqueño.
Puerto Rico--Economic policy.
Puerto Rico--Politics and government--1952-1998.
Puerto Rico--Social policy.
Harvard subject headings:
Partido Socialista Puertorriqueño.
Puerto Rico--Economic policy
Puerto Rico--Politics and government--1952-
Puerto Rico--Social policy.
Princeton subject headings:
Partido Socialista Puertorriqueño.
Puerto Rico--Economic policy.
Puerto Rico--Politics and government--1952-1998.
Puerto Rico--Social policy.