Columbia subject headings:
Excise tax--Ecuador--History--18th century.
Excise tax--Ecuador--History--19th century.
Harvard subject headings:
Excise tax--Ecuador--History--18th century.
Excise tax--Ecuador--History--19th century.
Princeton subject headings:
Excise tax--Ecuador--History--18th century.
Excise tax--Ecuador--History--19th century.