Columbia subject headings:
Nicaragua Canal (Nicaragua)
Nicaragua--Foreign relations--United States.
United States--Foreign relations--Nicaragua.
Harvard subject headings:
Nicaragua Canal (Nicaragua)
Nicaragua--Economic conditions.
Nicaragua--Foreign relations--United States.
Nicaragua--Politics and government.
Nicaragua--Relations--United States.
United States--Foreign relations--Nicaragua.
United States--Relations--Nicaragua.
Princeton subject headings:
Nicaragua Canal (Nicaragua)
Nicaragua--Economic conditions.
Nicaragua--Foreign relations--United States.
Nicaragua--Politics and government.
Nicaragua--Relations--United States.
United States--Foreign relations--Nicaragua.
United States--Relations--Nicaragua.