Columbia subject headings:
Ecuador--Antiquities.
Indians of South America--Antiquities.
Science--Ecuador--History.
Technology--Ecuador--History.
Harvard subject headings:
Indian philosophy--Ecuador.
Indians of South America--Ecuador--History
Indians of South America--Industries--Ecuador.
Science--Ecuador--History.
Technology--Ecuador--History.
Princeton subject headings:
Indians of South America--Ecuador--History.
Indians of South America--Ecuador--Industries.
Indians of South America--Ecuador--Philosophy.
Science--Ecuador--History.
Technology--Ecuador--History.