Columbia subject headings:
Ecuador--Politics and government--1944-1984.
Partido Nacionalista Revolucionario (Ecuador)--History.
Harvard subject headings:
Ecuador--Politics and government--1944-1984.
Partido Nacionalista Revolucionario (Ecuador)--History.
Princeton subject headings:
Ecuador--Politics and government--1944-.
Partido Nacionalista Revolucionario (Ecuador)--History.