Columbia subject headings:
Bilingualism--Peru.
Indians of South America--Peru--Languages--Social aspects.
Language surveys--Peru.
Peru--Languages--Social aspects.
Quechua Indians--Languages--Social aspects.
Spanish language--Social aspects--Peru.
Harvard subject headings:
Bilingualism--Peru.
Indians of South America--Languages--Social aspects--Peru.
Language surveys--Peru.
Peru--Languages--Social aspects.
Quechua Indians--Languages--Social aspects.
Spanish language--Social aspects--Peru.
Princeton subject headings: