Columbia subject headings:
Black people--South America.
Equality--South America.
Social stratification--South America.
South America--Race relations.
Harvard subject headings:
Black people--South America.
Equality--South America.
Social stratification--South America.
South America--Race relations.
Princeton subject headings:
Black people--South America.
Equality--South America.
Social stratification--South America.
South America--Race relations.