Columbia subject headings:
Nicaragua--History--1937-1979.
Nicaragua--History--Revolution, 1979.
Harvard subject headings:
Nicaragua--History--1937-1979.
Nicaragua--History--1979-1990.
Nicaragua--History--Revolution, 1979.
Princeton subject headings:
Nicaragua--History--1937-1979.
Nicaragua--History--1979-1990.
Nicaragua--History--Revolution, 1979.