Columbia subject headings:
Ecuador--History--Periodicals.
Latin America--History--Bibliography--Periodicals.
Latin America--History--Periodicals.
Harvard subject headings:
Ecuador--History--Periodicals.
Latin America--History--Bibliography--Periodicals.
Latin America--History--Periodicals.
Princeton subject headings:
Ecuador--History--Periodicals.
Latin America--History--Bibliography--Periodicals.
Latin America--History--Periodicals.
Periodicals.