Columbia subject headings:
Black people--Ecuador--Social conditions.
Indians of South America--Ecuador--Social conditions.
Indians of South America--Education--Ecuador.
Ortiz, Adalberto. Juyungo.
Harvard subject headings:
Black people--Ecuador--Social conditions.
Indians of South America--Ecuador--Social conditions
Indians of South America--Education--Ecuador.
Ortiz, Adalberto. Juyungo.
Princeton subject headings:
Black people--Ecuador--Social conditions.
Indians of South America--Ecuador--Education.
Indians of South America--Ecuador--Social conditions.
Ortiz, Adalberto. Juyungo.