Columbia subject headings:
Arias Sánchez, Óscar.
Costa Rica--Politics and government--1948-1986.
Presidents--Costa Rica--Biography.
Harvard subject headings:
Arias Sánchez, Oscar--1941.
Costa Rica--Presidents--Election.
Elections--Costa Rica.
Fernández, Guido.
Presidents--Costa Rica--Election.
Princeton subject headings:
Arias Sánchez, Óscar.
Costa Rica--Politics and government--1948-.
Presidents--Costa Rica--Biography.