Columbia subject headings:
Bilingualism--Ecuador.
Indians of South America--Ecuador--Languages.
Language and culture--Ecuador.
Quechua language--Ecuador.
Spanish language--Ecuador.
Harvard subject headings:
Bilingualism--Ecuador.
Indians of South America--Ecuador--Languages
Language and culture--Ecuador.
Quechua language--Ecuador.
Spanish language--Ecuador.
Princeton subject headings:
Bilingualism--Ecuador.
Indians of South America--Ecuador--Languages.
Language and culture--Ecuador.
Quechua language--Ecuador.
Spanish language--Ecuador.