Columbia subject headings:
Partido Nuevo Progresista.
Puerto Rico--Politics and government--1952-1998.
Harvard subject headings:
PARTIDO NUEVO PROGRESISTA(P.R.)--History.
PARTIDO NUEVO PROGRESISTA(P.R.)--Membership.
Puerto Rico--Politics and government--1952-
Puerto Rico--Politics and government--1952-1998.
Princeton subject headings:
Partido Nuevo Progresista (Puerto Rico)
Puerto Rico--Politics and government--1952-1998.