Columbia subject headings:
Borderlands--Ecuador--Congresses.
Borderlands--Latin America--Congresses.
Ecuador--Boundaries--Congresses.
Latin America--Boundaries--Congresses.
Harvard subject headings:
Borderlands--Ecuador--Congresses.
Borderlands--Latin America--Congresses.
Ecuador--Boundaries--Congresses.
Latin America--Boundaries--Congresses.
Princeton subject headings:
Borderlands--Ecuador--Congresses.
Borderlands--Latin America--Congresses.
Ecuador--Boundaries--Congresses.
Latin America--Boundaries--Congresses.